Over 20 years of precision engineering — from progressive stamping dies to checking fixtures and welding jigs, delivered globally from China.

In the automotive industry, the quality of every stamped component depends on the precision of the tooling behind it. Whether you need high-volume body panels, complex structural brackets, or inspection fixtures that guarantee dimensional accuracy, choosing the right manufacturing partner is critical. LINHAI DIAN MOULD CO., LTD (Dian Stamping) has been a reliable supplier of automotive stamping dies and stamped metal parts since 2003, serving OEMs and Tier suppliers across more than 10 countries.

Company Overview: More Than Two Decades of Expertise

Established in 2003 in Huangyan, Taizhou, Zhejiang Province, Dian Stamping has grown into a modern manufacturing facility covering approximately 50,000 m², with a dedicated die workshop of 4,000 m². The company employs around 110 skilled professionals, including 35 die designers and technicians. With an annual die production capacity of approximately 2,000 sets of medium and small stamping dies and a reported annual die turnover of around RMB 50 million, Dian Stamping is well-equipped to handle projects of varying scale and complexity.

Core Capabilities Across the Manufacturing Chain

Dian Stamping offers a comprehensive one-stop service covering tooling design, die manufacturing, sheet metal stamping, welding assembly, and quality inspection. The company's four main product categories address the full spectrum of automotive production needs.

Stamping Dies

As experienced stamping die manufacturers, Dian Stamping specializes in progressive dies, transfer dies, and tandem/multi-station dies for large and medium-sized complex parts. The dies are designed to process multiphase steel, aluminum alloys, custom rolled and welded plate, and stainless steel. Application areas include body-in-white panels, door systems, seating system components, instrument panels, fuel-tank systems, exhaust systems, clutch systems, and chassis structures. Typical delivery time is 30–40 days for steel stamping dies and approximately 70 days for casting stamping dies.

Sheet Metal Parts

Beyond tooling, Dian Stamping provides high-volume production of stamped sheet metal parts for both automotive and household appliance industries. The company offers custom metal fabrication, laser cutting, bending, welding, and assembly, with materials ranging from high-strength steel and aluminum to galvanized and stainless steel. Prototype services are available for new product development, and customization can be made from 2D drawings, 3D data, or physical samples.

Checking Fixture

Every stamped part needs to be verified. Dian Stamping designs and manufactures high-precision checking fixtures aligned with GD&T standards for stamped components and welded assemblies. A checking fixture confirms whether a manufactured workpiece meets the specified dimensions, enabling rapid inspection of large batches with consistent accuracy. Press dies and checking fixtures are always supplied as a set, eliminating individual measurement variations and ensuring production quality.

Welding Jig

To support accurate and repeatable assembly, Dian Stamping supplies custom welding jigs designed for automotive production lines. These fixtures ensure precise positioning during welding, reducing rework and improving cycle times. The company also provides welding parts and assembly services as part of its end-to-end manufacturing offering.

Why Choose Dian Stamping?

• Factory-Direct Pricing — Dian Stamping is a manufacturer, not a trading company. Customers benefit from competitive factory pricing without intermediary markups.
• Proven OEM Partnerships — The company supplies stamping dies and parts to major automotive brands including KIA, BYD, Toyota, Honda, Suzuki, and Geely, demonstrating a track record of meeting stringent OEM quality standards.
• End-to-End Service — From die design and prototyping to mass production, inspection, and assembly, Dian Stamping manages the entire manufacturing chain under one roof, reducing lead times and coordination overhead.
• Quality Management — The company operates under ISO 9001 and follows IATF 16949-oriented automotive manufacturing and quality practices, with rigorous in-line inspections and dimensional verification.
• Expanding Capacity — A new 35,000 m² facility featuring advanced press lines and coating lines is in development, further strengthening Dian Stamping's production capabilities.
• Global Reach — With exports to more than 10 countries, the company has established logistics and communication channels to serve international customers efficiently.

Quality Assurance You Can Rely On

In automotive manufacturing, precision is non-negotiable. Dian Stamping's quality management system is built around ISO 9001 certification, while its manufacturing processes adhere to IATF 16949-oriented guidelines. Each die undergoes thorough tryout and validation before shipment. For stamped parts, the company deploys in-line inspections, 3D scanning (CMM), and checking fixtures to verify dimensional accuracy. Free metal samples are available upon request (freight paid by the customer), allowing prospective clients to evaluate quality firsthand.

Industries and Applications Served

While the primary focus is automotive, Dian Stamping's capabilities extend to household appliances, HVAC systems, and industrial equipment. The company's 82 archived product records span body-in-white components, door system reinforcements, seating system brackets, instrument panel structures, fuel-tank and exhaust system parts, chassis components, and appliance parts such as refrigerator brackets, panels, hinges, and evaporator plates.