A trusted China-based manufacturer with over two decades of expertise in automotive stamping tooling and production

In the global automotive supply chain, the quality of stamping tooling and sheet metal components directly influences vehicle safety, structural integrity, and production efficiency. Automotive OEMs and Tier-1 suppliers are constantly seeking manufacturing partners that combine precision engineering, competitive pricing, and reliable delivery. LINHAI DIAN MOULD CO., LTD (Dian Stamping), established in 2003 in Zhejiang Province, China, has emerged as a trusted partner for global automotive brands including KIA, BYD, Toyota, Honda, Suzuki, and Geely. With over 20 years of industry experience and exports to more than 10 countries, Dian Stamping offers a comprehensive range of services from automotive stamping dies to finished sheet metal assemblies.

A Manufacturing Facility Built for Scale and Precision

Dian Stamping operates a modern facility covering approximately 50,000 m², including a dedicated die workshop of 4,000 m². The company employs around 110 people, among them approximately 35 experienced die designers and technicians. This infrastructure supports an annual capacity of approximately 2,000 sets of medium and small stamping dies, with a reported annual die turnover of around RMB 50 million. A new 35,000 m² facility featuring advanced press and coating lines is also in development, further expanding the company's production capabilities.

The company's capabilities span the entire manufacturing spectrum: tool and die manufacturing, stamping, welding, assembly, and the production of checking fixtures and welding jigs. Materials processed include multiphase steel, aluminum, custom rolled and welded plate, and stainless steel, enabling the production of complex components for body-in-white, door systems, seating systems, instrument panels, fuel-tank systems, exhaust systems, clutch systems, and chassis systems.

Comprehensive Stamping Die Solutions

At the core of Dian Stamping's offering is its expertise in progressive die stamping, transfer dies, and tandem/multi-station dies. These precision tooling solutions are designed for high-volume production of complex automotive parts with tight tolerances. The company's die designers are proficient in developing tooling for body-in-white components such as A-pillar inner panels, side frames, spare tire wells, and door hinge reinforcement plates, as well as seating system components including seat basins, support beams, and battery cases.

Sheet Metal Parts for Automotive and Appliance Industries

Beyond tooling, Dian Stamping is a reliable sheet metal parts supplier for both automotive and household appliance manufacturers. The company produces a wide range of stamped metal components including brackets, panels, hinges, handles, heat shields, and structural reinforcements. With expertise in progressive and transfer stamping, deep drawing and forming, and custom tool and die design, Dian Stamping delivers end-to-end solutions from prototyping to mass production.

For the appliance sector, the company manufactures precision components for refrigerators, washing machines, and ovens — including evaporator panels, compressor brackets, and cabinet panels. Material options include stainless steel, aluminum, cold-rolled steel, and galvanized steel, ensuring corrosion resistance and durability for long-service-life applications.

Precision Measurement with Checking Fixtures

A critical element of quality assurance in stamping production is dimensional verification. Dian Stamping provides high-precision checking fixture solutions designed to GD&T standards. These fixtures enable rapid, repeatable inspection of stamped components and welded assemblies, eliminating individual measurement variation and ensuring that every part meets OEM specifications. The company's checking fixtures are designed to work seamlessly with its stamping dies, providing a complete quality control package for production lines.

Custom Welding Jigs for Accurate Assembly

Dian Stamping also manufactures custom welding jig solutions for accurate, repeatable welding and assembly operations. These fixtures are designed to position and hold components during welding, ensuring consistent joint quality and dimensional accuracy across production runs. The company's welding jigs support a variety of applications including chassis assembly, frame construction, and sub-assembly welding for automotive and industrial customers.

Quality Management and Certification

Dian Stamping operates under an ISO 9001 quality management system and follows IATF 16949-oriented automotive manufacturing practices. The company's commitment to quality is reflected in its rigorous inspection processes, which include in-line checks, statistical process control, and CMM (coordinate measuring machine) verification. These practices ensure that every die set and stamped part meets the stringent requirements of global automotive OEMs.

Customization and Prototyping Services

Dian Stamping offers full customization services based on 2D drawings, 3D data, or physical samples. The company can develop prototype tooling and parts for new vehicle programs, enabling customers to validate designs before committing to full-scale production. Free metal samples are available upon request (with freight paid by the customer), allowing potential partners to evaluate material quality and workmanship firsthand.

As a factory-direct manufacturer rather than a trading company, Dian Stamping provides competitive pricing without compromising on quality. The company's integrated approach — from die design to production stamping, from inspection fixtures to welding assembly — makes it a true one-stop partner for automotive metal parts manufacturing.