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Who manufactures Correx board in China?

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Today, a new buyer approached us to inquire about correx board products. Since they had never seen the production process and were not very familiar with the product, we showed them detailed product information, as New Plastic specializes in the production of correx board.

Xinsu is a professional manufacturer specializing in corrugated plastic sheet products, including corflute sheets, coroplast sheets, and custom plastic packaging solutions. With years of expertise, we proudly serve global customers with high-quality materials for advertising, packaging, construction, agriculture, and logistics.

Our flagship products offer:

  • Customizable sizes (Length: unlimited; Width: up to 2600mm)
  • Thickness range from 1.6mm to 12mm
  • Durable, waterproof, and lightweight properties
  • Support for custom printing, die-cutting, and box designs

At Xinsu, we combine efficient service, fast production, and international experience to deliver value for every customer. Whether you’re sourcing for retail, wholesale, or project needs, we’re here to help.


Xinsu offer sheet products and also make boxes, customizing various shapes of packaging materials and display materials according to drawings. The materials we use are all environmentally friendly correx board. We can also give examples of the box production process.

plastic boxes

🏭 How Xinsu Manufactures Correx Boxes – Step by Step

At Xinsu, we take pride in producing high-quality correx boxes through a well-controlled, efficient, and customizable process. Here’s how we do it:


1. Raw Material Preparation

We use polypropylene (PP) raw material, known for its durability, waterproof nature, and recyclability. The material is compounded with color masterbatches and UV stabilizers (if required) for added strength and weather resistance.

2. Sheet Extrusion

The polypropylene is extruded into correx sheets using our advanced production lines. We control:

  • Thickness (from 1.6mm to 12mm)
  • Width (up to 2600mm)
  • Flute size (customizable per strength requirement)
  • Color (standard or custom matched)

3. Sheet Cutting & Die-Cutting

Once the sheets are cooled and quality-checked, we cut them to size according to your box design. For box shapes, we use:

  • Flat cutting for simple sheets
  • Die-cutting for complex box styles or interlocking designs

4. Box Structure Design

We support a wide range of box styles:

  • Regular Slotted Container (RSC)
  • Die-cut display boxes
  • Foldable totes
  • Partitions & dividers

We can customize handles, Velcro, lids, printing, or labeling as required.

5. Ultrasonic or Hot Melt Welding (If Needed)

For foldable or reusable boxes, we offer ultrasonic welding or hot melt assembly to fix corners, frames, or reinforcements.


6. Custom Printing

We provide silk screen, UV printing, or digital printing to add logos, instructions, or branding to your boxes. Printing is waterproof and long-lasting.


7. Quality Inspection

Before packing, each batch undergoes strict QC inspection to ensure:

  • Correct size and structure
  • Strong bonding and folding
  • Neat printing
  • Packaging cleanliness

8. Packaging & Shipping

Boxes are flat packed to save space or assembled per your request. We support custom packaging and labeling for each order and arrange fast shipment worldwide.


Boost your business with our high quality services

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