The automotive industry demands more than just metal forming — it demands precision, consistency, traceability, and a supply chain partner that can deliver on all fronts. For over two decades, Linhai Dian Mould Co., Ltd. (DIAN STAMPING) has been the go-to partner for global automotive OEMs seeking high-quality stamping die manufacturers that combine engineering excellence with integrated manufacturing capabilities. From progressive die stamping to full vehicle body components, DIAN STAMPING has built a reputation that extends far beyond the workshop floor.

A Foundation Built on Trust and Certification

Established in 2003 and headquartered in Linhai, Zhejiang Province, DIAN STAMPING operates a 50,000-square-meter production facility with over 110 employees, including 35 dedicated mold designers and technicians. The company holds both ISO 9001 and IATF 16949 certifications — the gold standard for automotive quality management systems. It is also recognized as a National High-Tech Enterprise and a Zhejiang Provincial Science and Technology SME, with an in-house R&D laboratory that drives continuous innovation in tooling and process development.

These credentials are not just badges on a wall. They reflect a disciplined approach to quality control, supplier management, and production consistency that major automotive brands demand. DIAN STAMPING's client roster includes KIA, BYD, Toyota, Honda, Suzuki, and Geely — names that themselves require rigorous auditing before onboarding any supplier.

Comprehensive Stamping Die Manufacturing Capabilities

As one of the leading stamping die manufacturers in China, DIAN STAMPING covers the full spectrum of die types to meet diverse production needs:

With an annual capacity of approximately 2,000 sets of medium-to-small stamping dies, DIAN STAMPING delivers steel stamping dies in 30-40 days and cast stamping dies in approximately 70 days, ensuring that OEMs maintain their production schedules without compromise.

Beyond Dies: Full-Service Metal Stamping and Assembly

What truly sets DIAN STAMPING apart from conventional metal stamping parts manufacturer is its vertically integrated, one-stop service model. The company manages the entire value chain in-house — from mold design and manufacturing to sheet metal stamping, welding, powder coating, and final assembly. This eliminates the risks and inefficiencies of outsourcing between multiple vendors.

The company's material processing capabilities cover multiphase steel, aluminum alloys, custom rolled steel and welded plate, and stainless steel — enabling it to serve a wide range of applications including:

• Body-in-White Systems — structural panels, pillars, cross members
• Door Systems — inner and outer panels, hinge reinforcements, rails
• Seat Systems — seat frames, support beams, brackets
• Dashboard Systems — cross beams, brackets, mounting hardware
• Exhaust Systems — heat shields, brackets, mounting hardware
• Fuel Tank Systems — tank components, mounting structures
• Chassis Systems — control arms, swing arms, structural reinforcements
• EV Battery Enclosures — large stamping and welding assemblies

Precision Measurement and Quality Assurance

Quality in automotive stamping is not just about the die — it is about verifying that every produced part meets exact specifications. DIAN STAMPING provides comprehensive checking fixture solutions that ensure GD&T compliance across all stamped components. These custom-designed inspection fixtures allow for rapid, repeatable dimensional verification, reducing the risk of downstream assembly issues.

In addition, the company's welding jig and assembly fixture capabilities ensure that welded sub-assemblies maintain consistent positional accuracy — critical for body-in-white and chassis applications where even millimeter-level deviations can affect vehicle performance and safety.

Body-in-White Stamping Expertise

For automotive OEMs focused on lightweight construction and structural integrity, body in white stamping requires specialized expertise in high-strength steel forming, springback compensation, and dimensional control across large panel geometries. DIAN STAMPING has delivered BIW tooling and components for multiple vehicle platforms, working with advanced materials including multiphase steel and aluminum alloys to help OEMs meet weight reduction targets without compromising crash performance.

Why OEMs Choose DIAN STAMPING