When sourcing automotive sheet metal parts, OEMs and Tier 1 suppliers face a common challenge: finding a partner who can deliver precision tooling, high-volume production, consistent quality, and cost efficiency under one roof. Dian Stamping, the manufacturing division of LINHAI DIAN MOULD CO., LTD, has been solving exactly this problem since 2003. Based in Taizhou, Zhejiang Province, the company has grown into a full-service manufacturing partner serving global automotive brands including KIA, BYD, Toyota, Honda, Suzuki, and Geely, with exports reaching more than 10 countries worldwide.

A Manufacturing Facility Built for Scale and Precision

Dian Stamping operates from a modern facility covering approximately 50,000 m², featuring a dedicated die workshop of 4,000 m². The company is currently expanding with a new 35,000 m² facility that will house additional press lines and advanced coating capabilities. This investment in infrastructure reflects a long-term commitment to meeting the growing demands of the automotive industry.

With a team of approximately 110 employees, including 35 experienced die designers and technicians, the company combines engineering talent with production scale. Annual capacity reaches about 2,000 sets of medium and small stamping dies, with a reported annual die turnover of approximately RMB 50 million — numbers that speak to both capability and market trust.

End-to-End Capabilities Under One Roof

What sets Dian Stamping apart from many stamping die manufacturers is the breadth of its vertically integrated service offering. Rather than requiring customers to coordinate between separate tooling, stamping, inspection, and welding suppliers, Dian Stamping provides all of these services in-house:

• Stamping Dies — Progressive dies, transfer dies, and tandem dies for large and medium-sized complex parts, designed using AutoCAD, SolidWorks, and CATIA.
• Sheet Metal Parts — High-precision stamped components from prototyping through high-volume production, with laser cutting, bending, welding, and powder coating capabilities.
• Checking Fixtures — GD&T-compliant inspection fixtures that ensure dimensional accuracy of stamped components, often delivered as a matched set with press dies.
• Welding Jigs & Assembly Fixtures — Custom welding jigs supporting robotic MIG welding, spot welding, and manual welding techniques for precision assembly.

This integrated approach means that custom sheet metal stamping parts move seamlessly from die design to production to quality verification — all within a single quality management system. The result is shorter lead times, reduced communication overhead, and consistent quality across every stage of production.

Material Versatility for Modern Automotive Applications

Today's automotive designs demand a wide range of materials, from advanced high-strength steels to lightweight aluminum. Dian Stamping has developed expertise in processing multiphase steel, aluminum, custom rolled and welded plate, and stainless steel. This material versatility allows the company to serve diverse application areas:

• Body-in-white systems
• Door systems and closures
• Seating system components
• Instrument panel and dashboard structures
• Exhaust and fuel tank systems
• Chassis and clutch system components

Quality Assurance: From ISO 9001 to IATF 16949 Practices

Quality is not an afterthought at Dian Stamping — it is built into every process. The company operates an ISO 9001-certified quality management system and follows IATF 16949-oriented automotive manufacturing practices. Every checking fixture is designed and manufactured to GD&T standards, enabling rapid and repeatable dimensional verification of stamped components. This commitment to quality assurance gives automotive customers confidence that every part meets specification, whether it is a prototype batch or a high-volume production run.

Customization and Prototyping Services

Every project begins with understanding the customer's specific requirements. Dian Stamping accepts design inputs in multiple formats — 2D drawings, 3D data, or physical samples — and provides prototype services before committing to full production tooling. Typical delivery timelines are 30 to 40 days for steel stamping dies and approximately 70 days for casting stamping dies, though these are always adjusted to match project-specific needs.

Why Global Automotive Brands Choose Dian Stamping

With over two decades of industry experience, a 50,000 m² manufacturing base, a team of 35 engineers, and a customer roster that includes some of the world's largest automotive manufacturers, Dian Stamping has earned its reputation as a reliable, cost-competitive partner for automotive sheet metal parts and stamping dies. The company's combination of in-house tooling, precision stamping, inspection fixtures, and welding assembly capabilities makes it a true one-stop solution for automotive OEMs and Tier suppliers seeking to streamline their supply chain.