More Than Two Decades of Die Expertise

DIAN Stamping, operating under LINHAI DIAN MOULD CO., LTD, has been engineering precision tooling since 2003. Headquartered in Huangyan, Taizhou, Zhejiang Province — a region long recognized as a manufacturing hub for automotive tooling — the company brings over 20 years of hands-on experience in the design, build, and tryout of automotive stamping dies. This depth of experience translates directly into faster ramp-up times and fewer iterations during the die tryout phase, a critical advantage for OEMs launching new vehicle programs on tight schedules.

Scale That Matches OEM Production Demands

One of the most common challenges OEMs face with smaller die shops is capacity bottlenecks. DIAN Stamping addresses this with a modern facility spanning approximately 50,000 m², including a dedicated die workshop of 4,000 m². The company's annual output reaches approximately 2,000 sets of medium and small stamping dies, with a reported annual die turnover of around RMB 50 million. A newly planned 35,000 m² facility will further expand capacity with additional press lines and coating capabilities.

Comprehensive Die Technologies Under One Roof

Unlike many suppliers that specialize in only one type of tooling, DIAN Stamping offers a full spectrum of stamping die technologies. The company designs and manufactures progressive die stamping tooling for high-volume, multi-operation parts, transfer dies for large and complex panels, and tandem or multi-station dies for medium-sized production runs. This versatility means OEMs can consolidate their tooling procurement across multiple vehicle programs with a single qualified supplier.

Application areas covered include body-in-white components, door systems, seating systems, instrument panels, fuel-tank systems, exhaust systems, clutch systems, and chassis systems — essentially the full range of structural and functional stampings that go into a modern automobile.

Material Versatility for Modern Lightweighting

As automotive OEMs push toward lighter, stronger vehicle structures, the materials being stamped have evolved dramatically. DIAN Stamping has the capability to process multiphase steel (AHSS), aluminum alloys, custom rolled and welded plate, and stainless steel. This material flexibility is essential for OEMs producing electric vehicles, where battery enclosures and structural components demand advanced high-strength materials and precise forming techniques.

Beyond the Die: Integrated Quality Assurance

Quality assurance in automotive stamping goes far beyond the press. DIAN Stamping provides a complete ecosystem of quality control tooling, including precision checking fixture solutions designed to GD&T standards. These fixtures allow production teams to verify part dimensions rapidly and consistently, eliminating individual measurement variation and ensuring every stamped component meets the OEM's specifications before it moves to assembly.

The company's quality management system is ISO 9001 certified and operates with IATF 16949-oriented practices, reflecting the rigorous standards expected in automotive manufacturing. In-line inspections, 3D scanning (CMM), and strain analysis are integrated into the production workflow.

OEM Partnerships That Speak Volumes

Over its two-decade history, DIAN Stamping has built long-term supply relationships with major automotive brands including KIA, BYD, Toyota, Honda, Suzuki, and Geely. The company exports to more than 10 countries, demonstrating its ability to meet international quality standards and logistics requirements. These partnerships are not transactional — they represent years of proven reliability, consistent quality, and responsive engineering support.

End-to-End Services: From Drawing to Production

DIAN Stamping positions itself as a direct factory, not a trading company — a distinction that matters for pricing and communication. Customization is available from 2D drawings, 3D data, or physical samples. Prototype services are also offered, enabling OEMs to validate die designs before committing to full production tooling. Typical delivery timelines are 30–40 days for steel stamping dies and approximately 70 days for casting stamping dies, though these are tailored to each project's specific requirements.

Welding Jigs and Assembly Integration

Stamped parts often need to be welded and assembled before they reach the vehicle. DIAN Stamping's capabilities extend to custom welding jigs and assembly fixtures, ensuring that stamped components can be accurately positioned and joined in repeatable production processes. This integration of die-making, stamping, and welding fixture design under one roof simplifies supply chain management and reduces the risk of dimensional mismatches between tooling and assembly.