1. Deep Industry Insight: We specialize in large injection mold bases for automotive door panels. Starting from the analysis of product design drawings, we perform precise calculations and structural design, offering profound understanding of the manufacturing challenges associated with large, complex, and high-appearance door panels.

2. Strong Technical and Equipment Capabilities:

   • Expert Team: Over 30 experienced engineering R&D technicians and more than 60 CNC technicians provide professional, full-process support from technical assessment to production.

   • Advanced Equipment Fleet: Equipped with over 60 high-precision machining facilities, including 35 CNC machining centers. Our large gantry machining center offers a maximum working range of 3500mm (X) x 2500mm (Y) x 1500mm (Z). Specialized equipment like deep-hole drills capable of processing water lines up to 1450mm deep are specifically geared towards handling the complex cooling channel systems in automotive door panel molds.

3. End-to-End Quality Control:

   • Premium Materials & Processing: We use customized mold steel. All steel is stress-relieved naturally for 90 days upon arrival, followed by strict spectroscopic and flaw detection testing. This ensures high hardness, corrosion resistance, and excellent surface finish from the source, laying the foundation for high yield rates.

   • Precision Guaranteed: Advanced machining equipment and a professional technical team ensure high-precision mold base manufacturing, effectively controlling product warpage and guaranteeing the final quality of the molded door panels.

4. Scalable Production & Reliable Delivery:

   • With a monthly production capacity valued at over RMB 8 million and an efficient supply chain management system, we ensure timely and stable delivery for both standard and custom orders.

• Injection cycle time for door panels reduced by 15%.

• Product warpage controlled within 0.05mm.

• Overall product yield rate increased by over 5%, with door panel yields reaching over 99% based on our mold bases.

• Standard or Custom to Print: We manufacture standard mold bases and excel at custom design and manufacturing according to client-provided 2D/3D drawings.

• Comprehensive Machining Services: We offer comprehensive processing including mold base machining from client-supplied materials, machining template plates, pocket milling, slider machining, water/oil holes, KO holes, spring holes, support pillar machining, leader pin bushings, wear plates, stop pins, and more.

• Diverse Product Range: Our offerings include large runner mold bases, pin-point gate mold bases, two-color/multi-color mold bases, large mold base machining, and deep-hole drilling services for mold bases.

Choose Changhui. Equip your automotive door panel injection molds with a sturdy and precise "skeleton," and let's jointly achieve a future of higher quality and more efficient manufacturing.

The picture below shows the production workshop of Changhui Company