When sourcing stamping die manufacturers, automotive OEMs look for more than just competitive pricing. They need a partner with proven engineering depth, consistent quality systems, and the production capacity to support high-volume vehicle programs. Dian Stamping, operating under LINHAI DIAN MOULD CO., LTD, has been delivering precisely that since 2003.

Based in Huangyan, Taizhou, Zhejiang Province — a region with a deep industrial ecosystem for tooling and metal forming — Dian Stamping has grown from a modest die workshop into a 50,000 m² modern manufacturing facility. The company now employs approximately 110 people, including 35 die designers and technicians, and produces around 2,000 sets of medium and small stamping dies annually, with a reported annual die turnover of approximately RMB 50 million.

A Full Spectrum of Stamping Die Capabilities

Dian Stamping designs and builds a wide range of tooling to meet diverse automotive requirements. The company specializes in automotive stamping dies, including progressive dies for high-speed, multi-station production, transfer dies for large and complex parts, and tandem dies for multi-operation sequences. These dies are used to produce body-in-white components, door system parts, seating system parts, instrument panel structures, and chassis components.

The die shop spans approximately 4,000 m² and is equipped to handle multiphase steel, aluminum alloys, custom rolled and welded plate, and stainless steel. Typical delivery lead times are 30 to 40 days for steel stamping dies and approximately 70 days for casting stamping dies, depending on project complexity.

Beyond Dies: Sheet Metal Parts, Checking Fixtures, and Welding Jigs

What sets Dian Stamping apart from many stamping die manufacturers is the breadth of its downstream capabilities. The company does not stop at die delivery. It also produces high-quality stamped sheet metal parts for automotive and household appliance applications, including brackets, panels, hinges, heat shields, and structural reinforcements.

For quality assurance, Dian offers precision checking fixture solutions. These GD&T-oriented inspection tools allow manufacturers to verify large volumes of stamped parts quickly and eliminate individual measurement variation. Press dies and checking fixtures go hand in hand — and Dian supplies both as an integrated package.

The company also manufactures custom welding jigs that ensure accurate, repeatable positioning during welding and assembly operations. From spot welding jigs to rotating and magnetic welding fixtures, these tools help automotive suppliers maintain consistent weld quality across production runs.

Quality Systems and OEM Credentials

Dian Stamping operates under an ISO 9001 quality management system and follows IATF 16949-oriented automotive manufacturing practices. The company has supplied tooling and production parts to major automotive brands including KIA, BYD, Toyota, Honda, Suzuki, and Geely, and exports to more than 10 countries worldwide.

A new 35,000 m² facility is currently in development, featuring additional press lines and coating capabilities. This expansion reflects the company's commitment to scaling with the growing demand for high-quality, cost-competitive automotive stamping solutions.

Customization and Prototyping Services

Dian Stamping positions itself as a factory-direct partner, not a trading company. Customers can submit requirements in the form of 2D drawings, 3D data, or physical samples. The company offers prototype services and free metal samples (with freight paid by the customer), allowing buyers to evaluate quality before committing to full production.

This flexibility is especially valuable for automotive Tier suppliers and industrial customers who need custom tooling, high-volume stamped parts, inspection fixtures, and welding or assembly fixtures under one roof.