In the fast-paced world of automotive manufacturing, the quality of every stamped component directly impacts vehicle safety, performance, and production costs. As global OEMs push for tighter tolerances, shorter lead times, and cost-effective sourcing, the choice of a stamping die partner has never been more critical. For over two decades, one name has stood out in the competitive landscape of Chinese manufacturing — DIAN STAMPING (LINHAI DIAN MOULD CO., LTD), a factory-direct supplier of precision automotive stamping dies, sheet metal parts, checking fixtures, and welding jigs.

A Foundation Built on Experience

Established in 2003 in Huangyan, Taizhou, Zhejiang Province, DIAN STAMPING has grown from a small die shop into a full-scale manufacturing facility spanning approximately 50,000 m². With a dedicated die workshop of 4,000 m² and a team of around 110 employees — including roughly 35 experienced die designers and technicians — the company brings more than 20 years of hands-on expertise to every project. The company's annual die turnover of approximately RMB 50 million and capacity of about 2,000 sets of medium and small stamping dies per year speak to its production maturity and reliability.

Comprehensive Manufacturing Capabilities

What sets DIAN STAMPING apart is its vertically integrated, one-stop service model. Rather than outsourcing critical stages to multiple vendors, the company controls the entire production chain — from tool design and die manufacturing to stamping, welding, and assembly. This integration translates into faster turnaround, tighter quality control, and factory-direct pricing that benefits OEMs and Tier suppliers alike.

The company's core strength lies in progressive die stamping, transfer dies, and tandem/multi-station dies. These technologies allow DIAN STAMPING to produce complex, high-precision components for body-in-white systems, door systems, seating systems, instrument panels, fuel-tank systems, exhaust systems, clutch systems, and chassis systems. The company works with a wide range of materials including multiphase steel, aluminum alloys, custom rolled and welded plate, and stainless steel.

Four Product Pillars

1. Stamping Dies

DIAN STAMPING designs and manufactures precision stamping tooling across all major die types — progressive, transfer, and tandem dies for large and medium-sized complex automotive parts. Each die is engineered for durability, consistent output, and minimal maintenance downtime, ensuring that production lines run smoothly over long production runs.

2. Sheet Metal Parts

Beyond tooling, the company produces high-quality stamped sheet metal components for both automotive and household-appliance industries. As a reliable sheet metal parts supplier, DIAN STAMPING offers custom fabrication, metal laser cutting, bending, forming, powder coating, and welding assembly — all under one roof. Parts range from brackets and panels to hinges, handles, structural reinforcements, and evaporator panels for refrigeration systems.

3. Checking Fixtures

Precision inspection is non-negotiable in automotive manufacturing. DIAN STAMPING manufactures high-precision checking fixture solutions that enable quick, repeatable dimensional verification of stamped parts and welded assemblies. These GD&T-oriented fixtures eliminate measurement subjectivity, reduce inspection time, and ensure that every part meets OEM specifications before it reaches the assembly line.

4. Welding Jigs

Accurate positioning during welding is essential for structural integrity and assembly consistency. DIAN STAMPING provides custom welding jig solutions designed for repeatable, high-precision welding operations. These fixtures support a variety of welding processes and are tailored to each customer's specific part geometry and production volume requirements.

Quality Assurance and Certifications

Quality is embedded in every stage of DIAN STAMPING's operations. The company operates under an ISO 9001 quality management system and follows IATF 16949-oriented automotive manufacturing practices. Rigorous in-process inspections, 3D scanning (CMM), and dimensional reporting ensure that every die and stamped part meets the tight tolerances demanded by the automotive industry.

Customers can request free metal samples for evaluation (with freight paid by the customer), and prototype services are available to validate designs before full-scale production. Typical lead times are 30–40 days for steel stamping dies and approximately 70 days for casting stamping dies, depending on project complexity.

Global Customer Base

DIAN STAMPING's reputation for quality and reliability has earned the trust of major automotive brands including KIA, BYD, Toyota, Honda, Suzuki, and Geely. The company exports to more than 10 countries, serving global automotive OEMs, Tier 1 suppliers, and industrial customers who require custom tooling, high-volume stamped parts, inspection fixtures, and welding assembly solutions.

Customization and Flexibility

Every project starts with understanding the customer's specific requirements. DIAN STAMPING accepts design inputs in multiple formats — 2D drawings, 3D data, or physical samples — and provides tailored solutions accordingly. Whether you need a single complex progressive die, a full set of stamping tooling for a new vehicle program, or ongoing production of sheet metal parts, the company's engineering team works closely with you to optimize design for manufacturability, cost, and lead time.

Future-Ready Facilities

DIAN STAMPING is investing in its future. A planned new 35,000 m² facility featuring advanced press lines and coating lines is in development, which will further expand the company's production capacity and processing capabilities. This expansion reflects the company's commitment to meeting growing global demand while maintaining the quality and cost advantages that have defined its reputation.