ZJXS5336335CBK front open plastic foldable storage box with lid

Product Advantages

Our collapsible plastic crates are manufactured from 100% virgin polypropylene (PP) and feature a reinforced pin-connected structure for improved load support and durability. The folding design allows the crates to be set up quickly when needed and folded down for compact storage and return transportation.

Available in various designs and sizes, our collapsible crates, containers, and storage boxes serve a wide range of industries and material-handling applications. Different product options help buyers select suitable storage and transport solutions for their operational requirements.

Key Features and Benefits

1. Virgin PP Material
Made from 100% virgin polypropylene, offering a practical material solution for reusable storage and transportation.

2. Reusable and Cost-Efficient Design
Durable construction supports repeated use and helps reduce reliance on disposable packaging materials, lowering long-term packaging costs.

3. Foldable and Stackable Structure
Crates fold down when empty to save warehouse and vehicle space. Their stackable design supports organized storage and handling.

4. Stable Stacking Performance
The specially designed base helps maintain stability during stacking and transportation, including cross-stacking applications where supported by the model.

5. Reinforced Nylon Pin Connections
Nylon pin-connected joints strengthen the crate structure and help maintain integrity during regular handling and transportation.

6. Applications Across Multiple Industries
Suitable for farms, contractors, retail wholesalers, catering businesses, industrial cargo handling, logistics providers, and warehouses.

7. Easy-Clean, Moisture-Resistant Material
The polymer construction is easy to clean and resists moisture, insects, fungi, acids, fats, solvents, and odors, supporting repeated use in different working environments.

For additional product specifications, available sizes, and product images, please refer to the relevant product listings or contact our sales team.

Frequently Asked Questions

1. What is the operating temperature range of the collapsible crates?

The crates can be used within a temperature range of -18°C to 65°C, making them suitable for various storage and transportation environments, including fresh-produce cold-chain logistics. The typical service life is approximately 3–5 years. Custom solutions may be discussed for applications with specific temperature requirements.

2. Are the connecting parts durable? How long can the crates be used?

The durability of connecting points depends on the material quality and structural design. ZNKIA collapsible crates use impact-resistant PP material and a reinforced structure to support regular handling and repeated use. Under normal operating conditions, the typical service life can reach approximately 3–5 years. Actual service life depends on loading conditions, handling practices, storage environment, and usage frequency.

3. Can damaged components be replaced?

Yes. Zhengji collapsible crates consist of multiple assembled components. If an individual component is damaged, the corresponding part can be replaced without discarding the entire crate, helping extend its useful service life.

4. Are lids available, and can they be secured?

Lids are available for selected models. The lid generally uses a snap-fit or clip-style closure that requires manual operation when opening. Buyers who need a lid-equipped model or have additional locking requirements can contact our sales team to confirm the available options.

5. What is the minimum order quantity (MOQ)?

Standard stock colors include green and blue, and available stock items can be ordered from as little as one piece. Customized colors generally require a minimum order of 1,000 units or more. For samples or small-volume purchases, please contact our sales team to confirm the applicable ordering terms.

6. Can the crate color and logo be customized?

Yes. Standard products are generally available in blue and green. Customized colors may include red, yellow, transparent, and other options, subject to confirmation. Branding options include screen printing, mold engraving, and tag clips.

7. What is the delivery lead time for ZNKIA collapsible crates?

Delivery schedules depend on stock availability, order quantity, product specifications, and customization requirements. In-stock products can be arranged for shipment according to the confirmed order schedule. For bulk orders, such as 1,000 pieces, the typical production-to-shipment period is approximately 3–7 working days, subject to stock status and order confirmation.

8. How can I confirm the exact delivery date?

Please provide the required model, order quantity, color, and any customization details to the ZNKIA sales team or online customer service. The team will confirm the delivery schedule based on the actual order requirements and production arrangements.

9. How long does customization take?

Customized orders may involve color matching, mold modification or development, trial production, and sample approval before mass production. New mold development generally requires additional stages, including design confirmation, mold manufacturing, trial molding, sample approval, and production preparation. The overall lead time can range from approximately 40 days to several months. Modifications using an existing mold may require less time.

10. What materials are used, and are the crates suitable for fresh produce?

The crates are made from impact-resistant polypropylene (PP), with virgin nylon used for the connecting components. According to the original product specifications, the products meet food-grade packaging requirements and can be used in direct contact with fresh produce. Buyers with specific food-contact compliance requirements should confirm the applicable documentation before placing an order.

11. Are the crates recyclable?

Yes. The all-plastic construction contains no metal or ceramic components and is designed to simplify end-of-life recycling without material separation or disassembly. The product is described as 100% recyclable. ZNKIA also provides a lifecycle service system covering product design, mold development, manufacturing, sales and leasing, recycling, and remanufacturing.

12. Do the crates remain stable when stacked?

The stacking structure incorporates slots on the bottom and rims on the top to help the crates interlock during stacking. Selected models also feature a staggered stacking design intended to improve stability. The original specifications state that certain models can remain stable at a 30° tilt. Performance depends on the model and stacking conditions. Follow the recommended stacking height and use the crates on level ground or in a suitable vehicle.

13. Can the crates work with automated handling systems?

Selected models feature flat-bottom designs and standardized dimensions for potential integration with automated sorting systems, conveyors, and robotic stacking equipment. Chip or RFID tag integration is also available for compatible configurations. Confirm dimensional tolerances, bottom design, and identification requirements with our sales team before selecting crates for an automated system.

14. What are the load capacity and maximum stacking height?

Load capacity and stacking height vary by model. The original product information gives a general load range of approximately 10–30 kg per crate. For example, the ZJKN604022W-HS fruit and vegetable crate is specified for a load of approximately 15–20 kg per crate and a stacking height of 8–10 layers. Most other models are described as stackable up to five layers. Please confirm the rated capacity and stacking limits for the selected model before use.

15. What should be considered when using the crates in cold-chain environments?

The specified operating temperature range is -18°C to 65°C. However, plastic toughness may decrease at low temperatures. Handle the crates carefully in cold environments and avoid severe impacts, sudden drops, or other conditions that may damage the structure.

16. How are ZNKIA collapsible crates packaged for shipment?

The crates are generally shipped in their folded condition to reduce shipping volume. Depending on the order quantity and transportation method, packaging options include cartons, stretch film, and palletized shipments. Special packaging requirements can be discussed with the sales team before order confirmation.

17. How much space can folded crates save during transportation?

The original product specifications indicate that folding can reduce crate volume by approximately 75%. For the 600 series, the folded thickness ranges from approximately 48–105 mm, depending on the model. This allows more empty crates to be transported in the same vehicle and helps reduce return-trip costs by minimizing the space occupied by unused containers.

18. Are the crates suitable for long-distance transportation?

Yes. ZNKIA collapsible crates use impact-resistant PP material, pin-connected joints, a dovetail joint structure, load-bearing side walls, and reinforced ribbing. The original specifications indicate a general load range of approximately 10–25 kg per crate and stacking heights of 5–10 layers, depending on the model. These features support long-distance logistics, including transportation over 1,000 km, when the crates are loaded and stacked within their specified limits.

19. What products does ZNKIA manufacture and supply?

ZNKIA's product range includes plastic collapsible crates, folding turnover containers, slant-stacking boxes, staggered nesting baskets, sleeve pallet boxes, automated warehouse bins, flatbed trolleys, and related material-handling products. These products serve more than 20 industries, including fresh produce, chain distribution, food and pharmaceuticals, automotive parts, electronics, logistics, and warehousing.

20. What certifications does ZNKIA hold?

According to the supplied company information, ZNKIA has obtained several management-system and product-related certifications, including SGS ISO 9001 Quality Management System Certification, ISO 14001 Environmental Management System Certification, ISO 45001 Occupational Health and Safety Management System Certification, and GRS (Global Recycled Standard) Certification. Please contact the company for current certificates, their scope, and applicable product documentation.