In the fast-paced world of automotive manufacturing, the quality of a stamped component is only as good as the tooling that produces it. Automakers and Tier-1 suppliers sourcing from China face a critical question: can the supplier deliver precision dies, high-volume stamped parts, and inspection-grade fixtures under one roof? LINHAI DIAN MOULD CO., LTD (Dian Stamping) has been answering that question with a resounding yes since 2003.

Headquartered in Huangyan, Taizhou, Zhejiang Province, Dian Stamping is a factory-direct manufacturer — not a trading company — that specializes in automotive stamping dies, sheet metal parts, checking fixtures, and welding jigs. With over 110 employees, including 35 die designers and technicians, and a 50,000 m² modern facility, the company has the scale and experience to support OEM programs from prototype to mass production.

Two Decades of Die-Making Excellence

Dian Stamping was founded in 2003 with a clear mission: become a one-stop, cost-competitive manufacturing partner for the global automotive industry. Over the past two decades, the company has grown from a small tooling workshop into a full-fledged production facility with an annual die turnover of approximately RMB 50 million and the capacity to produce roughly 2,000 sets of medium and small stamping dies per year.

The company's customer roster reads like a who's who of global automotive brands: KIA, BYD, Toyota, Honda, Suzuki, and Geely. Dian Stamping exports to more than 10 countries, proving that its quality and pricing compete effectively on the world stage. The company's development history — documented on its website — shows a steady trajectory of investment in larger presses, coating lines, and expanded workshop space, including a planned 35,000 m² addition featuring state-of-the-art press and coating lines.

Comprehensive Stamping Die Capabilities

At the core of Dian Stamping's offering is its die-making expertise. The company designs and builds progressive die stamping tooling, transfer dies, and tandem (multi-station) dies for a wide range of automotive applications. These include body-in-white (BIW) components, door systems, seating systems, instrument panels, fuel-tank systems, exhaust systems, clutch systems, and chassis systems.

The die workshop spans approximately 4,000 m² and is equipped to handle complex geometries and tight tolerances. Dian Stamping processes a variety of materials including multiphase steel, aluminum alloys, custom-rolled and welded plate, and stainless steel — all critical for modern lightweight vehicle design. Whether the requirement is a high-speed progressive die for high-volume production or a transfer die for large, complex panels, the engineering team delivers optimized solutions.

Precision Sheet Metal Parts and Fabrication

Beyond tooling, Dian Stamping is a reliable sheet metal parts supplier for both automotive and household appliance industries. The company produces stamped metal parts ranging from structural brackets and reinforcement plates to complex weld assemblies. Secondary operations such as laser cutting, bending, welding, and surface coating are all available in-house, reducing lead times and ensuring consistent quality.

Sample parts in the product catalog include rear outer panels, side frames, spare tire wells, B-pillars, seat basins, heat shields, and instrument panel components. For the appliance sector, Dian Stamping manufactures brackets, hinges, handles, evaporator panels, and other precision parts for refrigerators, washing machines, and ovens — all produced with the same automotive-grade quality standards.

Checking Fixtures and Welding Jigs

A complete stamping solution does not end with the die. Dian Stamping also designs and manufactures precision checking fixtures and welding jigs, ensuring that every stamped part meets dimensional specifications before it enters the assembly line.

The company's checking fixture products are built to GD&T standards and enable fast, repeatable inspection of complex stamped components. Paired with custom welding jigs, these fixtures eliminate measurement variability and support consistent weld quality in high-volume production environments. For automotive suppliers managing multiple part numbers, having a single source for dies, fixtures, and jigs means fewer coordination headaches and faster ramp-up times.

• Checking fixtures for body panels, structural parts, and sub-assemblies
• Welding jigs for spot welding, MIG welding, and robotic welding cells
• Custom fixture design based on 2D drawings, 3D CAD data, or physical samples

Quality Systems and Manufacturing Standards

Quality is embedded in every stage of Dian Stamping's process. The company operates under an ISO 9001 quality management system and follows IATF 16949-oriented automotive manufacturing practices. In-line inspections, 3D coordinate measuring machines (CMM), and strain analysis are used to validate dimensional accuracy throughout production.

The company's commitment to quality extends to its supply chain and material sourcing. All incoming steel, aluminum, and other raw materials are verified against customer specifications before production begins. With a typical delivery of 30–40 days for steel stamping dies and approximately 70 days for casting dies, Dian Stamping balances speed with rigorous quality assurance.

Why Choose a Factory-Direct Partner?

One of the most common pitfalls in global sourcing is dealing with intermediaries. Dian Stamping is a direct manufacturer — customers communicate with the actual factory engineers, not sales agents. This transparency translates into better pricing, faster problem resolution, and greater control over production schedules.

The company offers free metal samples (with freight paid by the customer), prototype services, and full customization from 2D drawings, 3D data, or physical samples. Whether you are launching a new vehicle program, sourcing replacement tooling, or scaling up production of stamped parts, Dian Stamping provides the engineering support and manufacturing capacity to meet your targets.