Automotive OEMs and Tier-1 suppliers face a persistent challenge: how to secure high-quality tooling and stamped metal parts at competitive prices without compromising on precision or delivery. While many manufacturers specialize in one segment of the production chain, few offer the complete ecosystem of services that today's global automotive industry demands. From initial die design to high-volume part production and quality inspection, the ability to consolidate multiple stages under one roof is a significant competitive advantage.

A Trusted Partner with Two Decades of Industry Experience

Linhai Dian Mould Co., Ltd (Dian Stamping Company), established in 2003 in Huangyan, Taizhou, Zhejiang Province, has spent more than 20 years building a reputation as a reliable manufacturing partner for the global automotive sector. The company's client roster includes some of the world's most recognizable automotive brands — KIA, BYD, Toyota, Honda, Suzuki, and Geely — and its products are exported to more than 10 countries worldwide.

What sets Dian Stamping apart is not just its longevity, but its comprehensive approach to manufacturing. Unlike many suppliers that focus exclusively on either tooling or production, Dian Stamping offers a fully integrated solution spanning progressive die stamping, transfer die manufacturing, sheet metal fabrication, checking fixture design, and welding jig production — all under one roof.

Manufacturing Scale and Capacity

Dian Stamping operates a modern facility covering approximately 50,000 m², with a dedicated die workshop of 4,000 m². The company's workforce of approximately 110 employees includes about 35 die designers and technicians, giving it the engineering depth to handle complex projects from concept through production.

The company is also investing in future growth with a planned 35,000 m² facility featuring new press and coating lines, which will further expand its production capacity and technological capabilities.

End-to-End Product and Service Portfolio

Dian Stamping's product offering covers the entire stamping value chain, making it a true one-stop partner for automotive manufacturers. The company's four core categories address every stage of the production process:

The company designs and manufactures precision stamping tooling in three primary configurations: progressive dies for high-speed, high-volume production; transfer dies for complex, multi-step parts; and tandem dies for large and medium-sized components. These dies serve a wide range of automotive applications, including body-in-white, door systems, seating systems, instrument panels, fuel-tank systems, exhaust systems, clutch systems, and chassis systems. Dian Stamping processes a diverse range of materials, including multiphase steel, aluminum alloys, custom rolled and welded plate, and stainless steel.

Beyond tooling, Dian Stamping produces high-quality stamped sheet metal parts for both automotive and household appliance industries. The company offers custom sheet metal parts fabrication, metal laser cutting, welding assemblies, and secondary operations such as deburring, bending, and coating. Whether for prototypes or high-volume production runs, the company delivers consistent quality and tight tolerances.

• Automotive: Body panels, chassis seats, A-pillar panels, door reinforcements, heat shields, fuel system components
• Household Appliances: Refrigerator brackets, panels, hinges, handles, evaporator panels, and structural parts
• Materials: High-strength steel, aluminum, cold-rolled steel, galvanized steel, stainless steel

Quality assurance is a critical part of any stamping operation. Dian Stamping manufactures high-precision checking fixture manufacturer solutions that enable rapid, repeatable dimensional verification of stamped components and welded assemblies. As the company's product documentation notes, press dies and checking fixtures are necessary as a set — the checking fixture eliminates individual measurement differences, ensuring that every part meets the specified GD&T requirements. This is especially important for complex geometries that are difficult to inspect with conventional tools like vernier calipers or micrometers.

For accurate, repeatable welding and assembly operations, Dian Stamping provides custom welding jig solutions. These fixtures ensure that welded assemblies maintain strict dimensional specifications, reducing rework and improving production throughput. The company's welding jigs are designed to support a wide variety of automotive assembly applications, from chassis components to body structures.

Quality Systems and Manufacturing Standards

Quality is embedded in every stage of Dian Stamping's manufacturing process. The company operates under an ISO 9001 quality management system and follows IATF 16949-oriented automotive manufacturing practices. Rigorous inspection protocols include in-line quality checks, 3D coordinate measuring machine (CMM) scanning, and dimensional validation using precision checking fixtures.

As a factory-direct manufacturer rather than a trading company, Dian Stamping offers significant cost advantages. Customers can submit requirements in the form of 2D drawings, 3D data, or physical samples, and the company's engineering team will develop the optimal tooling and production strategy. Prototype services are also available to accelerate product development cycles.

Competitive Delivery and Lead Times

In the fast-paced automotive industry, timely delivery is as important as quality. Dian Stamping maintains efficient production workflows to meet tight project schedules. Typical lead times are 30–40 days for steel stamping dies and approximately 70 days for casting stamping dies, depending on the complexity and specifications of each project. The company's large-scale facility and vertically integrated operations enable it to manage multiple concurrent projects, making it a dependable partner for both new vehicle programs and ongoing production support.