In the world of automotive manufacturing, the difference between a vehicle that performs flawlessly and one that falls short often comes down to the precision of its stamped components. From body-in-white structures to seating systems, from door assemblies to chassis parts, every stamped metal part must meet exacting tolerances and quality standards. This is where progressive die stamping plays a pivotal role — enabling high-volume production of complex geometries with consistent accuracy.

LINHAI DIAN MOULD CO., LTD (DIAN STAMPING), established in 2003 in Huangyan, Taizhou, Zhejiang Province, has spent more than two decades honing its expertise in this exact discipline. With a modern facility spanning approximately 50,000 m² and a dedicated die workshop of 4,000 m², the company has positioned itself as a trusted one-stop manufacturing partner for automotive OEMs and Tier-1 suppliers across the globe.

A Manufacturing Powerhouse by the Numbers

DIAN STAMPING's scale of operations reflects its commitment to serving the global automotive industry. With around 110 employees, including approximately 35 experienced die designers and technicians, the company combines human expertise with advanced manufacturing infrastructure. Its annual production capacity of roughly 2,000 sets of medium and small stamping dies — supported by an annual die turnover of approximately RMB 50 million — demonstrates the kind of throughput that OEMs and suppliers require for their vehicle programs.

Beyond its current footprint, DIAN STAMPING is investing in the future with a planned 35,000 m² facility featuring new press lines and advanced coating lines — a clear signal of its commitment to expanding capacity and adopting next-generation manufacturing technology.

Comprehensive Die and Stamping Capabilities

DIAN STAMPING's core offering spans the full spectrum of die manufacturing. The company specializes in automotive stamping dies, including progressive dies, transfer dies, and tandem/multi-station dies — each designed to handle the demanding requirements of modern automotive production. These dies are engineered to process a wide range of materials, including multiphase steel, aluminum alloys, custom rolled and welded plate, and stainless steel.

The company's expertise extends well beyond die manufacturing. DIAN STAMPING also produces high-quality stamped sheet metal parts, precision checking fixtures, welding jigs, and complete welding and assembly parts. This vertically integrated approach means that customers can source their tooling, production, and inspection needs from a single, accountable partner.

Application areas covered by DIAN STAMPING's dies and parts include:

• Body-in-White (BIW): Side frames, A-pillar panels, spare tire wells, and structural reinforcements
• Door Systems: Hinge reinforcement plates, water-cut reinforcement panels, and door guides
• Seating Systems: Seat basins, support beams, B-pillar liners, and floor panels
• Instrument Panels and Chassis Systems: Dashboard components, swing arms, and control arm assemblies
• Exhaust and Fuel-Tank Systems: Heat shields, shields, and brackets

Precision Inspection: The Checking Fixture Advantage

In automotive stamping, producing a part is only half the story — verifying its dimensional accuracy is equally critical. DIAN STAMPING offers high-precision checking fixture solutions designed to confirm whether a manufactured workpiece meets the specified dimensions. These GD&T-oriented inspection fixtures enable rapid, repeatable inspection of large volumes of parts, eliminating the individual measurement variations that can arise with manual tools like calipers or micrometers.

As any experienced stamping professional knows, press dies and checking fixtures go hand in hand. DIAN STAMPING supplies both as a matched set, ensuring that the same engineering rigor applied to die design is carried through to the inspection process. This integrated approach to quality assurance is a key differentiator in the automotive supply chain.

Quality Systems and Global Certifications

DIAN STAMPING operates under a quality-management system aligned with ISO 9001 standards, and the company's manufacturing practices are oriented toward IATF 16949 automotive quality requirements. This commitment to quality is reflected in the company's customer roster, which includes global automotive brands such as KIA, BYD, Toyota, Honda, Suzuki, and Geely.

The company's export reach extends to more than 10 countries, serving both OEMs and Tier suppliers who demand reliable, repeatable, and cost-effective stamping solutions. DIAN STAMPING positions itself as a factory-direct partner — not a trading company — which means customers benefit from direct pricing, full transparency, and end-to-end accountability.

Welding Jigs and Assembly Integration

Beyond stamping and inspection, DIAN STAMPING provides custom welding jigs designed for accurate, repeatable production and assembly. These fixtures are essential for automotive manufacturers who need to maintain consistent weld quality across high-volume production runs. Combined with the company's welding parts and assembly parts capabilities, DIAN STAMPING offers a truly end-to-end manufacturing solution — from raw material to finished assembly.

Why Choose DIAN STAMPING?

The automotive stamping industry is crowded with suppliers, but DIAN STAMPING differentiates itself through several key strengths:

• Factory-Direct Pricing: No middlemen — customers deal directly with the manufacturer
• Two Decades of Experience: Established in 2003, with deep expertise in automotive die design and production
• Full-Service Capability: Dies, stamped parts, checking fixtures, welding jigs, and assembly under one roof
• Material Versatility: Multiphase steel, aluminum, stainless steel, and custom alloys
• Proven Global Track Record: Serving OEMs like KIA, BYD, Toyota, and Geely across 10+ countries
• Ongoing Investment: New 35,000 m² facility with advanced press and coating lines in development