In the fast-paced world of automotive manufacturing, the quality of your tooling determines the quality of your production. Whether you are an OEM launching a new vehicle platform or a Tier-1 supplier scaling up stamped component output, finding a reliable partner for progressive die stamping and precision tooling can make or break your supply chain. With over two decades of hands-on experience, a 50,000 m² manufacturing campus, and a portfolio that serves globally recognized automakers, LINHAI DIAN MOULD CO., LTD (Dian Stamping) has positioned itself as a cost-competitive, one-stop manufacturing partner for the automotive industry.

Two Decades of Die and Stamping Excellence

Founded in 2003 in Huangyan, Taizhou, Zhejiang Province — a region renowned for its mold-making heritage — Dian Stamping has grown from a specialized die workshop into a full-spectrum metal forming enterprise. The company today operates a modern facility covering approximately 50,000 m², with a dedicated die workshop of 4,000 m² and a planned 35,000 m² expansion featuring new press lines and advanced coating capabilities.

With around 110 employees, including 35 experienced die designers and technicians, Dian Stamping achieves an annual output of approximately 2,000 sets of medium and small stamping dies, with an annual die turnover of roughly RMB 50 million. This scale allows the company to serve multiple OEM programs simultaneously without compromising on delivery reliability.

Comprehensive Service Portfolio

What sets Dian Stamping apart is its vertically integrated service model — from tool design and die manufacturing to stamped part production, inspection, and welding assembly. The company's capabilities span four core areas:

Dian Stamping designs and manufactures progressive dies, transfer dies, and tandem multi-station dies for large and medium-sized complex automotive parts. These automotive stamping dies are engineered to handle multiphase steel, aluminum alloys, custom rolled and welded plate, and stainless steel — ensuring flexibility across material specifications. Typical delivery time for steel stamping dies is 30–40 days, while casting stamping dies are delivered in approximately 70 days, subject to project complexity.

Beyond tooling, Dian Stamping produces high-volume stamped sheet metal parts for both automotive and household appliance applications. From body-in-white structural components to refrigerator brackets and panels, the company offers end-to-end solutions from prototyping to mass production, with secondary operations including laser cutting, bending, welding, and powder coating.

Every stamped part needs to be verified. Dian Stamping provides high-precision checking fixture solutions designed to GD&T standards, enabling fast, repeatable dimensional inspection of stamped components and welded assemblies. As the company emphasizes, press dies and checking fixtures go hand in hand — a checking fixture eliminates individual measurement variation and ensures consistent quality across high-volume production runs.

To support assembly-ready stamped parts, Dian Stamping designs and manufactures custom welding jigs that ensure accurate positioning and repeatable weld quality. These fixtures are tailored to specific automotive assemblies, helping manufacturers reduce rework and maintain dimensional stability throughout the welding process.

Quality Systems and Industry Certifications

Quality assurance is embedded in every stage of Dian Stamping's operations. The company operates under an ISO 9001 quality management system, with manufacturing practices aligned to IATF 16949 automotive standards. In-line inspections, 3D coordinate measuring machines (CMM), and strain analysis are routinely applied to ensure that every die and stamped part meets OEM specifications.

The company's commitment to quality has earned it the trust of major automotive brands including KIA, BYD, Toyota, Honda, Suzuki, and Geely. With exports reaching more than 10 countries, Dian Stamping has demonstrated its ability to meet the stringent requirements of global automotive supply chains.

Applications Across the Vehicle Structure

Dian Stamping's tooling and parts are used across a wide range of automotive subsystems:

• Body-in-White: Side frames, rear outer panels, A-pillar reinforcements, spare tire wells, and floor panels
• Door Systems: Hinge reinforcement plates, water-cut reinforcement panels, middle gates, and guides
• Seating Systems: Seat basins, support beams, B-pillar liners, and frame assemblies
• Instrument Panels and Cockpit: Dashboard supports and cross-car beams
• Exhaust and Chassis: Heat shields, swing arms, control arms, and chassis seats
• Fuel and Battery Systems: Fuel-tank components and battery cases for new energy vehicles

Why Automotive Buyers Choose Dian Stamping