About Us

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About Us

DONGGUAN CRJ MOULD TECH CO.,LTD.

DONGGUAN CRJ MOULD TECH CO.,LTD. (formerly Shenzhen Changrongjia Plastic Bag Co., Ltd.) is a subsidiary of the Changrongjia Group. Established in 1996, the Group specializes in the manufacture of precision pneumatic punching molds, as well as various plastic bags and films. Driven by a spirit of innovation and enterprise, the Group has become a leading manufacturer and supplier in the plastic bag industry.

Leveraging 30 years of expertise in manufacturing plastic film punchers, DONGGUAN CRJ MOULD TECH CO.,LTD. has emerged as a top manufacturer in China. Our product range includes interchangeable punchers, round hole punchers, tear-notch punchers, butterfly hole punchers, multi-hole punchers, triangular hole punchers, handle hole punchers, and custom-shaped hole punchers. We provide comprehensive after-sales support, and all hole sizes and shapes can be customized to meet specific requirements.

+86 13961606568

30+

Years of Natural Ingredients Innovation

4600+

Products Offered

32+

Registered Patents

110+

R&D and Quality Personnel

1.9+

Combined Production Area

4000+

Customers Served in Over 70 Countries Per Year

Over 30 Years of Expertise

We are a professional manufacturer with three decades of experience in the design and production of punching machines.

World-Class Precision Manufacturing

Equipped with high-precision imported machinery to ensure top-tier product quality.

Strong R&D Capabilities

A dedicated R&D team delivers innovative and advanced technical solutions.

Continuous Quality Improvement

We constantly upgrade our products through technical collaborations with leading enterprises.

Customization Support

Hole sizes and shapes can be customized to meet your exact specifications.

Worry-Free After-Sales Service

We provide lifelong technical guidance and a comprehensive after-sales support system.

Customer-Centric Commitment

We are dedicated to delivering superior quality, competitive pricing, and reliable service.

Move forward in exploration and grow in challenges

Development History

1996

Established in Longgang, Shenzhen; focused on the independent R&D of pneumatic punching molds for plastic bags and entered the precision mold manufacturing sector.

1996

2000–2007

Refined production processes, achieved ISO9001 and ISO14001 dual-system certifications, and began exporting products to Southeast Asia.

2000–2007

2008

Established a production base in Qingxi, Dongguan; introduced Japanese SEIBU slow-feeding wire-cut EDM and CNC machining centers; mastered punching technology for ultra-thin films (0.01mm).

2008

2010–2018

Established six wholly-owned subsidiaries spanning industries such as molds, plastic bags, photovoltaics, and electronics; assembled a professional R&D team and built a patent portfolio.

2010–2018

2019–2023

Secured dozens of patents related to punching equipment; developed a comprehensive product matrix of modular punching machines compatible with various types of packaging bags.

2019–2023

2024–Present

Advancing global expansion with operations in over 60 countries; serving Fortune 500 companies such as Coca-Cola and P&G; establishing robust domestic and international sales and after-sales service networks; committed to becoming a global leader in the punching machine industry.

2024–Present

1996

2000–2007

2008

2010–2018

2019–2023

2024–Present

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