The Silent Designer - How EVA Cases Shape the Future of Electronics Without Saying a Word

In the fast paced world of electronics, first impressions are everything.  Sleek design, advanced features, and cutting edge technology are essential.  It is the way a product is presented.  At Yisi Packing, we believe that your electronics deserve more than just functional packaging, they deserve a custom EVA case that speaks volumes, without saying a word.

 

Why Electronics Brands Are Rethinking Their Packaging

 

Electronics today are more than tools, they’re personal, portable, and premium.  Whether it's noise cancelling headphones, a drone, or a high end power bank, the way these devices are packaged affects how consumers perceive quality, reliability, and even innovation.  

 

Cardboard boxes and plastic trays might do the job, but custom EVA cases elevate that experience.  They’re durable, molded to fit the product perfectly, and they carry an unspoken message:


“What’s inside is worth protecting.”

 

Protection That Reinforces Precision

 

Electronics are delicate.  Every sensor, screen, and cable matters.  That’s why protection isn’t just practical, it’s psychological.

 

When customers receive your product in a well fitted EVA case, they immediately recognize your attention to detail.  It tells them your brand goes beyond performance, it values presentation, protection, and precision.

 

At Yisi Packing, we engineer EVA cases specifically for your device, with interior compartments for accessories, molded foam inserts for a snug fit, and exterior finishes that match your design language.  It is no matter modern, rugged, or minimalist.

 

A Canvas for Brand Innovation

 

Unlike generic packaging, a custom EVA case lets you shape every element.  Need a hard shell case with soft touch fabric and debossed logo?  Or a bold zipper color to match your brand palette?  No problem.

 

Our cases are used by electronics brands worldwide to reflect their tech forward identity through:

 

  • Sleek, contoured designs

  • Tech inspired textures and finishes

  • Embedded brand elements (logos, icons, colors)

  • Smart compartment layouts for accessories, cables, or manuals

 

It’s not just packaging, it’s a portable brand experience.

 

Built for Unboxing, Designed for Sharing

 

In today’s digital world, the unboxing moment is often recorded, shared, and remembered.  When your electronic device comes in a high quality EVA case, it creates a premium unboxing experience.  This one that sticks in the mind and looks great on camera.

 

And unlike disposable boxes, EVA cases are often kept and reused.  They become travel companions for earbuds, chargers, or other gadgets, offering long term exposure for your brand.

 

Let Your Electronics Speak Through Design

 

At Yisi Packing, we don’t just make cases, we craft experiences for tech brands.  Our custom EVA cases are trusted by companies around the world to reflect their product’s quality, innovation, and identity.

 

In a world where design and function must coexist, let your electronics be protected, presented, and promoted - silently, beautifully, and powerfully.

 

Why More OEMs Are Turning to Custom EVA Case Solutions

When it comes to packaging and product protection, more OEMs are starting to realize the value of custom EVA cases. They’re lightweight, durable, and offer a more premium feel than traditional plastic or paper box options.  Whether you're shipping sensitive electronics, medical equipment, or consumer products, a well designed EVA case can really change the way your product is presented and protected.

 

But not all EVA cases are created equal.

 

What Is a Custom EVA Case, Anyway?

 

For those unfamiliar, EVA stands for ethylene-vinyl acetate.  It’s a flexible but tough material that’s perfect for protective carrying cases.  A custom EVA case typically includes a molded shell, internal foam insert, zipper closure, and branding elements, all tailored to fit your specific product.

 

Unlike standard off the shelf packaging, custom EVA cases are made to order.   That means size, shape, material finish, color, and even logo placement are fully customizable.  For OEMs, this can be a big deal, it is not just for product protection, but for branding too.

 

Why OEMs Are Making the Switch

 

Here are a few reasons OEMs are moving away from traditional packaging to custom EVA cases:

 

  • Better Protection
    The semi rigid shell combined with custom cut foam gives your product a snug, shock resistant fit.  That’s peace of mind during shipping or customer use.

  • Improved Branding
    A custom case gives your product a more premium look and feel.  Add your logo, use your brand colors, even the zipper pulls can be customized.

  • Professional Presentation
    Whether it’s a sales kit, a medical device, or a high end tool, EVA cases elevate the unboxing experience.

  • Cost Effective in Volume
    Many OEMs think custom equal to expensive.  Not necessarily.  Once you get past the prototyping stage, production pricing is surprisingly competitive, it is especially compared to bulky hard cases or fully custom plastic molding.

 

Things to Look for in an EVA Case Manufacturer

 

Not all manufacturers offer the same service or quality.  If you're exploring options, here are a few things to consider:

 

  • In house design and prototyping
    A factory that can take your concept and turn it into a prototype quickly saves you time and headache.

  • Material selection
    Look for a supplier who offers multiple fabric textures, color options, and foam densities.

  • Experience with your industry
    If you’re in the medical or electronics space, it helps if the manufacturer already understands your requirements, like withstand gamma radiation compatibility or anti static materials.

  • Low minimum order quantities (MOQs)
    Not every project starts with 1,000 units.  Find a supplier flexible enough to work with your production volume.

 

Suggestion

 

At the end of the day, choosing the right packaging partner is just as important as the product itself.  A good custom EVA case doesn’t just protect your product, it enhances the overall value in the eyes of your customer.

 

If you're considering switching to EVA cases or starting a new project, it's worth having a conversation with a manufacturer who understands OEM needs and can support you through the full process, it is starting from concept to final shipment.

 

Want help creating a custom EVA case for your product?  Feel free to reach out, even if you’re just exploring options.

Glass packaging material compatibility test method?

Test focus:

Chemical Resistance: Products containing strong acids or bases, particularly those containing strong acids or bases, may corrode the glass surface. This corrosion may cause glass flakes to break off, form visible particles, or imperceptibly damage the integrity of the glass. Furthermore, these substances can dissolve alkali metal ions. If these ions accumulate on or within the glass, they can cause a dramatic shift in the glass's pH, altering its chemical properties and ultimately affecting its performance and lifespan.

Inner layer surface treatment: whether the release agent, siliconizing agent or other inner coating is compatible with the contents, whether it migrates or affects the stability of the contents.

Metal Cap/Pump Head Compatibility: While glass itself is inert, the accompanying metal cap (available in tinplate or aluminum) and pump head (made from various types of plastic and metal springs) must be compatible with the contents. This is because corrosion and rusting can contaminate the contents and even prevent proper function.

Seal Compatibility: The cap lining (e.g., PE foam padding, PVC padding, cork) or pump head seal must be compatible with the contents.

Physical shock: Skincare Glass Bottle is fragile, but it is necessary to ensure that the characteristics of the contents (such as viscosity, presence of solid particles) do not increase the risk of breakage during normal use and transportation (although not strictly a compatibility issue, but relevant).

 

Main test methods:

Glass particle/delamination test: Pour the contents or a specific corrosive solution (such as dilute acid or alkali) into a glass container, store it at high temperature (such as 121°C) or accelerated conditions for a certain period of time, and assess the risk of delamination by visual inspection, light obscuration particle counting, and ICP-MS detection of the dissolved silicon, boron, sodium and other elements (refer to USP <660> or similar methods).

Inner coating stability: Observe whether the inner coating has peeling, dissolution, blistering, etc.; check whether there is any migration of coating components in the contents.

Metal parts corrosion test: Check whether the metal cover, pump head spring, etc. are rusted or discolored; detect whether the content of metal ions (such as Fe, Sn, Al, Cr, Ni) in the contents is abnormally elevated (AAS, ICP-OES/MS).

Seal Compatibility Testing: Similar to testing for seals in plastic containers (swelling, migration, weight change).

pH Monitoring: Alkali released from glass may cause an increase in pH, which requires close monitoring during stability testing.

OEM vs. ODM Why Your New Clothing Brand Needs a Supplier That Does Both


Launching a new clothing brand is an exciting journey filled with creative vision and ambitious goals. However, one of the most critical and challenging decisions you'll face is choosing the right manufacturing partner. For a new brand, finding a supplier that offers both Original Equipment Manufacturing (OEM) and Original Design Manufacturing (ODM) services isn't just a convenience—it's a strategic advantage. Here’s why.


Understanding the Key Difference
First, it’s essential to understand what these terms mean:

OEM (Original Equipment Manufacturing): In this model, you provide the complete design package. This includes tech packs, detailed sketches, fabric specifications, trim details, and samples. The supplier's role is to execute your precise vision, manufacturing the product exactly to your specifications. You own the designs.

ODM (Original Design Manufacturing): Here, the supplier provides pre-designed products. You can browse their existing catalogs and select designs to customize with your own labels, fabrics, colors, and minor alterations. The core design and development work are handled by the factory.

see our new ODM designs : Recycled MTB wear


For a new brand, a supplier that excels in both areas offers unparalleled flexibility and becomes a true partner in growth.

1. Unmatched Flexibility and Scalability
A new brand's needs can change rapidly. You might have a brilliant, fully-formed idea for a signature piece that requires OEM precision. Simultaneously, you might need to quickly fill out your collection with complementary basics like t-shirts or leggings, where ODM is a perfect, cost-effective solution.

A hybrid supplier allows you to pivot between these models seamlessly within the same relationship. You can use ODM to launch faster and test the market, then leverage OEM to develop your unique, brand-defining products without the hassle of managing multiple manufacturers.

2. Optimal Resource Allocation (Time and Money)
Cost-Efficiency: ODM services significantly reduce development costs. The supplier absorbs the R&D expense of creating the base designs. This allows you to allocate your limited budget to OEM projects for your custom designs or to marketing efforts.

Time-Saving: Developing a product from scratch (OEM) is time-consuming. Sourcing fabrics, creating tech packs, and sampling can take months. ODM shortcuts this process, enabling you to bring products to market much faster and capitalize on trends.

3. Reduced Risk and Market Testing
The fashion market is unpredictable. Instead of investing heavily in a full custom collection immediately, you can use a supplier's ODM options to test the waters.

Launch a small capsule collection using customized ODM pieces to gauge customer response to styles, fits, and price points. The data and feedback you gather are invaluable. You can then make informed, lower-risk investments in OEM production for your next collection, creating custom designs you are confident will resonate with your audience.

4. Access to Expertise and Innovation
A supplier capable of both ODM and OEM is often more established and has a deeper well of expertise. Their ODM offerings showcase their capabilities, design sensibility, and knowledge of current trends and fabrics.

This relationship becomes a collaborative partnership. You can learn from their experts, get advice on materials and construction techniques for your OEM projects, and leverage their industry connections. They can help troubleshoot design flaws and suggest improvements, elevating the quality of your brand from the start.

5. Streamlined Communication and Logistics
Managing multiple suppliers for different needs is a operational nightmare for a nascent brand. It multiplies communication efforts, complicates shipping logistics, and increases the margin for error.

Having a single, versatile partner simplifies everything. You have one point of contact for sampling, production timelines, quality control, and shipping. This consolidation reduces administrative overhead, ensures consistency in communication, and often leads to better negotiation power on minimum order quantities (MOQs) and pricing over time.

Conclusion: Building a Partnership for Growth
For a new clothing brand, the choice of a manufacturer is more than just a vendor transaction; it's about choosing a foundational partner. A supplier that offers both OEM and ODM services provides a unique toolkit: the agility to experiment and grow, the efficiency to conserve crucial resources, and the expertise to elevate your product quality.

This flexibility allows you to navigate the challenging early stages of your brand with more confidence, less risk, and a greater capacity for innovation. In the competitive world of fashion, that strategic advantage can make all the difference. When evaluating potential partners, prioritize those who can grow with you and offer both paths to production.


Our factory tengjie, we always keep high-quality communication and products for all brands, not matter new or big.

Our product lines are including performance waterproof outdoor wear, luxury equestrian wear, professional mountain bike wear, downhill wear and also top sport wear- merino golf wear collection.


Expecting to talk with all brands whom ambition and taking challenge for building clothing business.

Do not accept glass bottles in these situations

I.Color: Slight color deviation from the Pantone color chart will be determined based on the Pantone color chart.

II.Finished Product Defects：Mold line misalignment is noticeable and can cause hand injuries.

III. Common Appearance Defects: Cracks, chips, chipped corners, deformation, glass ripping, internal wall sticking, and sharp punctures that may affect the seal and pose a risk of injury. Cold marks, pitting, brush marks, wrinkles, stubble marks, scissor marks, base thickness variations, and minor scratches may also be present on the bottle. Discoloration, black spots, bubbles, and pinholes may be present elsewhere.

IV.Foreign Objects: Broken glass, insects, metal, blood, and other issues. Check the bottle's interior and exterior for visible foreign objects such as oil, water, paper scraps, and small impurities.

V. Process Spraying

The sprayed surface is not smooth or flat; it may exhibit streaks, wrinkles, frosting, orange peel, or other defects. On the main viewing surface: Two particles or off-color spots with a diameter ≤ 0.5mm² may be present, and these particles or off-color spots must not affect the logo or layout. On the non-main viewing surface: No more than three particles or off-color spots with a diameter ≤ 0.5mm² may be present, and these particles or off-color spots must meet the requirements of "not noticeable after direct viewing for 3 seconds," "not concentrated," and "not affecting the logo or layout."

VI. Packaging:Mixing or misplacing packaging; damage or dirt on the outside of the packaging that affects the quality of the contents.

VII.Vacuum Tightness Test: Fill the bottle with 80% colored water, place it sideways in a vacuum chamber, and apply a pressure of -0.05 MPa for 5 minutes. If there is any visible leakage,

VIII. Hot Stamping and Printing Adhesion Test

Scotch 3M810 tape was applied to the test area, smoothed to remove air bubbles, and left for 1 minute. The tape was then peeled off quickly and vigorously at a 45-90 degree angle. The same area was tested once. The ink and hot stamping were slightly adhered to the tape. The adhered object showed spots or surface detachment, affecting the writing and appearance.

IX. Wall Thickness:Bottle body thickness deviation >1.5mm, bottom thickness deviation >3mm.

X. Glass Bottle Thermal Shock Resistance Test

1. Place empty glass bottles in a mesh basket, ensuring the bottles remain upright and separated from each other. Securely close the basket lid.

2. Immerse the basket containing the bottles in a hot water tank (controlled at 64°C ± 1°C), ensuring that each bottle is completely filled with hot water and that the top of the bottle mouth is at least 50mm below the water surface. Maintain this condition for 5 minutes.

3. Within 16 seconds, completely empty the hot water from all bottles in the basket. Immediately, transfer the basket to a cold water tank (controlled at 22°C ± 5°C), ensuring that each bottle is completely filled with cold water and that the top of the bottle mouth is at least 50mm below the water surface. Maintain this condition for 30 seconds.

4. Remove the basket containing the glass bottles from the cold water tank and completely empty the cold water from all the bottles.

5. Inspect the glass bottles to ensure they are free of cracks, breaks, or other defects.

XI. Stability

1. Pour an equal amount of the corresponding material into each glass bottle and seal it.

2. Place the sealed glass bottles in the following three environments for three consecutive months:

  • Room temperature
  • Incubator (controlled at 45°C ± 1°C)
  • Refrigerator (controlled at -15°C ± 1°C)

3. Observe the glass bottles regularly at the following time points:

  • First week: Observe on the 1st, 3rd, and 7th day
  • Within the first month (excluding the first week): Observe weekly
  •  After two months: Observe monthly

4. After inspection, ensure that the glass bottle meets the following requirements:

  • The packaging material exhibits no signs of expansion, cracking, deformation, whitening, or embrittlement
  • There is no color transfer between the packaging material and the material
  • The packaging material's color intensity is not diminished, and there is no corrosion
  • empty flat shoulder glass bottle

How to test the functionality of a glass bottle？

Glass bottles are subject to various external forces during transportation, stacking, and daily use. We conduct mechanical tests that simulate actual scenarios to prevent product failures during end-use.

Leakage test: Use a negative pressure seal tester to place the bottle under a specific vacuum degree to observe whether there is leakage or bubble generation to ensure that the contents will not leak or be contaminated.

Drop test: This test simulates an accidental drop that may occur during transportation and handling. A bottle filled with contents (or a substitute) should not break or leak after being dropped from a specified height (such as 1 meter or 1.5 meters) onto a hard surface.

Stacking Test: To simulate warehouse stacking conditions, we apply a 5 kg weight (or the equivalent of 10 layers of bottles) to a stack of filled bottles for 72 hours. The bottles must show no deformation, collapse, or seal damage.

Bottle Cap Torque Test: A torque meter is used to measure the force required to open and close the bottle cap (typically 0.5-2.0 N·m, depending on the bottle size). This ensures that the force prevents leakage while allowing easy opening and closing for the end user.

Pump Head Functionality Test: For bottles with pump heads, the dispensing volume (with a tolerance of ±5%) and the stability of the dispensed liquid over 100 cycles are tested. "Dry pumps" (no liquid discharged) and uneven dispensing are not permitted.

Finally, we test the bottle's ability to fulfill its designed function based on its specific intended use:

Ease of dispensing: For squeeze bottles, measure the force required to dispense liquid (ideal for adults is 30-50 Newtons); for pump-top bottles, ensure that excessive pressure is not required.

Reusability (if applicable): For refillable bottles, perform a "clean-fill-seal" cycle test at least 50 times to ensure there is no wear on the bottle threads, cap, or pump tip.

Label adhesion: If the bottle has a label, test its resistance to water, oil, and friction to ensure it remains intact in humid or oily environments (such as bathroom skincare glass bottles).

skincare shampoo glass bottle

3-Piece Empty Aerosol Can



3-piece tinplate aerosol can is a sealed container composed of three independent metal components: the can body, the top and the bottom, which are combined through processes such as welding and crimping.


Parallel development of traditional and emerging fields

The food, pharmaceutical, and daily chemical industries remain core application scenarios, while new categories such as e-cigarettes have become growth highlights. Environmental policies are promoting the substitution of metal aerosol cans for plastic and glass packaging, especially in personal care and cosmetics.


Technological upgrading and green transformation

Optimization of production processes: Enterprises are accelerating the introduction of automated production lines and green technologies (such as energy-saving welding processes) to enhance product quality and production efficiency and reduce carbon emissions.


Material sustainability

The recyclability of tinplate aligns with the trend of a circular economy, and environmental policies are driving industry standardization and the improvement of recycling systems.

Why do your glass bottles always have problems?

From surface smoothness to pump head compatibility, we control quality across two dimensions.

I. Appearance Quality

Surface Smoothness: glass bottle bodies must be free of scratches, bubbles, pinholes, uneven shrinkage, and other defects. Even minute surface bubbles may harbor dirt or foster bacterial growth (posing significant risks for skincare and food products). We ensure uniform surface smoothness through a combination of visual inspection under natural light and tactile verification.

Color Consistency: Colors must closely match the color swatch or Pantone number confirmed by the customer, with no visually discernible color variation permitted within the same batch. This requires suppliers to possess advanced color matching systems and stable masterbatch addition processes.

Printing Durability: For screen printing, foil stamping, labeling, etc. Inspection should focus on print clarity, with particular emphasis on testing print adhesion and wear resistance. Common tests include the “tape peel test” (applying 3M tape and peeling it off to check for ink transfer) and the “abrasion test” (rubbing the printed surface over 50 times with a soft cloth to ensure no fading).

II. Size Compatibility

Bottle Dimensions: Measure critical dimensions such as the outer diameter of the bottle opening, height, and wall thickness using tools like calipers and projectors to ensure they fall within the tolerances specified in the drawings.

Fit between cap and bottle: The diameter, thread pitch, and height of the bottle neck must perfectly match the cap. Manual assembly testing verifies that the cap twists on smoothly without binding, neither too loose nor too tight. For flip-top caps, hinge operation must be tested over 100 times to ensure no risk of breakage.

Pump Head/Spray Nozzle Fit with Bottle Opening: For injection-molded bottles equipped with pump heads (e.g., lotion glass bottles) or spray nozzles (e.g., spray glass bottles), the inner diameter of the bottle opening and the flatness of the opening surface are critical. Dimensional deviations may cause pump head clogging or uneven dispensing. After assembling the pump head/spray nozzle onto the bottle, we conduct over 20 dispensing tests to ensure smooth operation.

skincare lotion glass bottles

Top 5 Custom Foam Inserts for EVA Cases Benefits and Applications

When it comes to product protection and presentation, custom EVA cases have become a ideal solution for industries worldwide.  But what truly enhances their functionality is what's inside, the correct foam insert.  At Yisi Packing, we understand that a well designed foam insert can make all the difference in protecting, organizing, and showcasing your products.

 

In this article, we’ll explore the top 5 custom foam insert types used in EVA cases, their unique benefits, and where they are commonly applied.

 

1. PU Foam (Polyurethane Foam)

 

Best for: Lightweight, shock absorbing protection

Industries: Consumer electronics, medical tools, retail packaging

PU foam is soft, flexible, and highly shock absorbent, making it ideal for items that require gentle cushioning.  Its spongy texture allows for a snug fit around irregularly shaped products. It’s also affordable and lightweight, perfect for consumer products like cameras, beauty tools, and medical devices.

Benefits:

  • Lightweight and flexible

  • Absorbs shock and vibration

  • Cost effective for high volume packaging

 

2. PE Foam (Polyethylene Foam)

 

Best for: Durable, rigid support and reusable packaging
Industries: Tools, drones, instrumentation, industrial kits

PE foam is firmer than PU foam, offering better structure and durability.  It’s ideal for heavier items or equipment that need to be stored or transported repeatedly.  PE foam inserts also resist moisture and chemicals, which is a major plus for industrial and outdoor applications.

Benefits:

  • High durability and impact resistance

  • Good for repeated use

  • Water and chemical resistant

 

3. EVA Foam

 

Best for: Premium protection and branding
Industries: Luxury products, electronics, promotional kits

EVA foam is the same material as the outer shell of your case, offering a cohesive, high quality look and feel.  It’s semi rigid, meaning it holds its shape well while still providing excellent shock absorption.  EVA foam is also great for custom color matching and CNC, excellent for premium product packaging or promotional kits.

Benefits:

  • Premium look and feel

  • Excellent customization (color, logo, shape)

  • Long lasting structural integrity

 

4. Die Cut Foam Inserts

 

Best for: Custom fit protection for unique or complex products
Industries: Medical devices, instrumentation, collectibles

Die cut foam can be created from PU, PE, or EVA and is precision cut to fit your product’s exact shape.  This ensures maximum protection and eliminates shifting during transit. It's perfect for high value or sensitive products that demand a tailored fit.

Benefits:

  • Perfectly fits any shape

  • Offers maximum protection

  • Enhances presentation and unboxing experience

 

5. Pick and Pluck Foam (DIY Foam)

 

Best for: Low volume or adjustable storage
Industries: Hobbyists, toolkits, DIY, samples

Pick and pluck foam allows users to remove foam blocks manually to fit their items.  While not suitable for high end or mass market products, it’s great for prototypes, sample kits, or adjustable storage cases where product sizes may vary.

Benefits:

  • Flexible layout without tooling

  • Cost effective for small runs

  • Easy to customize on the spot

 

Choosing the Right Foam Insert

 

Each type of foam insert offers specific advantages depending on your product's size, weight, fragility, and usage.  At Yisi Packing, we work with clients to develop custom EVA case solutions with the perfect foam insert to ensure functionality, durability, and an enhanced user experience.

 

Need help designing your next custom EVA case with foam inserts?


👉 Contact us today for a free consultation or sample!

 

What We Really Do to Test EVA Case Durability and Quality

At Yisi Packing, we don’t just design custom EVA cases that look good, we build them to last.  For many of our clients, durability isn’t a luxury; it’s a requirement.  Whether you're transporting precision medical devices, expensive electronics, or delicate beauty tools, protection is everything.

 

That’s why our commitment to quality goes beyond materials and design.  It includes different testing to ensure every custom EVA case meets the highest standards in performance, durability, and reliability.

 

Here’s a behind the scenes look at how we test our EVA cases before they reach your hands.

 

🧪 1. Drop Test: Simulating Real World Accidents

 

In reality, cases get dropped.  Whether it’s in shipping, in a warehouse, or by an end user, impacts happen.  We simulate this by dropping cases from various heights and angles onto hard surfaces to test shock absorption.

 

Our custom EVA shells, combined with carefully designed foam interiors, are engineered to distribute and minimize impact, protecting the contents inside.  We analyze:

 

  • Case integrity after impact

  • Zipper and hinge performance

  • Internal foam displacement

 

💪 2. Compression Test: Handling the Pressure

 

If your case is going to be stacked, squeezed, or stored under pressure, it needs to hold its shape.  Our compression tests apply controlled weight and pressure to the case to see how it reacts.  We monitor:

 

  • Deformation of the EVA shell

  • Foam memory retention

  • Structural performance over repeated tests

 

This is especially important for industries like medical devices, tools, and electronics, where even slight pressure damage could affect function.

 

🌊 3. Water Resistance Testing: Protecting Against Moisture

 

While EVA cases aren’t fully waterproof, many of our clients require a level of water resistance.  It is especially in outdoor or high humidity environments.  We conduct splash and soak tests to evaluate:

 

  • Zipper sealing and water entry

  • Moisture protection of inner contents

  • Dry time and Structural integrity

 

Want better moisture protection?  We offer water resistant zippers, custom seals, and coated materials upon request.

 

🔄 4. Temperature & Aging Tests: Built for the Long Haul

 

Temperature extremes can warp or weaken lower quality materials.  Not ours.

 

We expose cases to hot and cold temperature cycles to simulate real world transport and storage conditions, it is from frozen warehouses to hot delivery trucks.  We also conduct aging simulations to assess:

 

  • UV resistance

  • Material discoloration

  • Long term flexibility of zippers and joints

 

✅ Why This Matters for You

 

Your product deserves packaging that performs under pressure.  Our durability testing isn’t just about checking boxes, but it’s about protecting your investment, minimizing returns, and ensuring your customers have the best possible experience.

 

At Yisi Packing, every custom EVA case is built on design, functionality, and proven performance.

 

Looking for a custom case that’s tested to protect?


Let’s talk.  Our engineering and sales teams are ready to help design a solution that fits your product, and stands up to the real world.

 

📩 [Contact Us] | 🌐 www.packingyisi.com