A comprehensive look at how LINHAI DIAN MOULD CO., LTD delivers end-to-end stamping solutions for global automotive OEMs

When it comes to automotive manufacturing, the quality of stamped components directly impacts vehicle safety, structural integrity, and production efficiency. Behind every precisely formed body panel, chassis bracket, or seating reinforcement lies a sophisticated stamping die engineered to deliver consistent results at high volume. For global OEMs and Tier suppliers searching for a reliable partner, LINHAI DIAN MOULD CO., LTD (Dian Stamping Company) has been delivering precision tooling and stamped parts for over two decades.

A Legacy of Precision Since 2003

Founded in 2003 and headquartered in Huangyan, Taizhou, Zhejiang Province, Dian Stamping has grown from a specialized mold shop into a comprehensive one-stop manufacturing partner for the automotive industry. The company operates a modern facility spanning approximately 50,000 m², with a dedicated die workshop of around 4,000 m², and employs roughly 110 people, including 35 experienced die designers and technicians.

Dian Stamping's client roster speaks to its manufacturing capabilities: the company serves well-known OEMs including KIA, BYD, Toyota, Honda, Suzuki, and Geely, and exports its products to more than 10 countries worldwide. This breadth of experience across both domestic and international automakers demonstrates the company's ability to meet diverse quality standards and engineering requirements.

Comprehensive Stamping Die Solutions

As experienced stamping die manufacturers, Dian Stamping offers a full spectrum of tooling solutions tailored to complex automotive applications. The company specializes in progressive dies, transfer dies, and tandem or multi-station dies, with an annual capacity of approximately 2,000 sets of medium and small stamping dies and an annual die turnover of around RMB 50 million.

These automotive stamping dies are designed for a wide range of applications, including body-in-white components, door systems, seating systems, instrument panels, fuel-tank systems, exhaust systems, clutch systems, and chassis systems. The company's engineering team works with customer-provided 2D drawings, 3D data, or physical samples to develop tooling that meets exact specifications. Material processing capabilities include multiphase steel, aluminum alloys, custom rolled and welded plate, and stainless steel, ensuring compatibility with modern automotive lightweighting strategies.

Sheet Metal Parts and High-Volume Production

Beyond die manufacturing, Dian Stamping functions as a full-service sheet metal parts supplier, producing stamped components for both automotive and household appliance industries. The company's press lines support high-volume production of custom metal parts, including brackets, panels, hinges, structural reinforcements, and welding assemblies. Secondary operations such as laser cutting, bending, welding, and surface coating are available to deliver finished components ready for assembly.

Dian Stamping's new 35,000 m² facility currently under development will further expand press capacity and add advanced coating lines, reinforcing the company's commitment to scaling alongside its customers' growing demands.

Precision Quality Assurance with Checking Fixtures

Quality control is a cornerstone of Dian Stamping's manufacturing process. The company designs and builds precision checking fixture systems for every critical stamped component and assembly. A checking fixture enables fast, repeatable inspection of complex geometries that would be difficult to measure with standard tools such as calipers or micrometers. This approach eliminates individual measurement variation and ensures that every part conforms to the specified GD&T requirements.

By integrating checking fixtures into the production workflow, Dian Stamping provides OEMs with documented quality assurance for every shipment. The company's quality management system is ISO 9001 certified, and its manufacturing practices are aligned with IATF 16949 standards for the automotive sector.

Welding Jigs for Accurate Assembly

Dian Stamping also manufactures custom welding jigs designed to position and hold components during the welding process, ensuring accurate, repeatable assembly. These welding fixtures support a variety of production scenarios, from manual welding stations to automated robotic welding cells, and are built to withstand the rigors of high-volume production environments.

Factory-Direct Pricing and Global Delivery

As a factory rather than a trading company, Dian Stamping offers competitive pricing with typical delivery times of 30–40 days for steel stamping dies and approximately 70 days for casting stamping dies, depending on project complexity. The company provides prototype services, free metal samples (with freight paid by the customer), and end-to-end support from design through production.

A Partner for the Long Term

For automotive OEMs and Tier suppliers seeking a cost-competitive, technically capable partner for stamping dies, sheet metal parts, checking fixtures, and welding jigs, Dian Stamping offers the experience, scale, and commitment to quality that long-term supply relationships demand. With over 20 years in the industry, a modern 50,000 m² facility, and a customer base that includes the world's leading automakers, Dian Stamping is positioned to deliver precision components that drive automotive excellence.