When sourcing critical tooling and stamped components for automotive production, the choice of manufacturing partner directly impacts quality, cost, and delivery reliability. For over two decades, LINHAI DIAN MOULD CO., LTD — known internationally as Dian Stamping Company — has served as a trusted stamping die manufacturers and precision sheet metal fabrication partner for global automotive OEMs. With a 50,000 m² modern facility in Taizhou, Zhejiang, and a team of approximately 110 skilled professionals, Dian Stamping delivers end-to-end solutions from die design and prototyping to high-volume production of stamped parts, checking fixtures, and welding jigs.

A Proven Track Record in Automotive Manufacturing

Established in 2003, Dian Stamping has built a reputation for engineering excellence across the automotive supply chain. The company's automotive stamping dies are deployed in body-in-white, door systems, seating systems, instrument panels, fuel-tank systems, exhaust systems, clutch systems, and chassis applications. This breadth of experience — spanning over 20 years — means that whether you need progressive dies for high-volume body panels or transfer dies for complex structural components, Dian Stamping has the engineering depth to deliver.

The company's customer roster speaks to its capabilities: Dian Stamping counts KIA, BYD, Toyota, Honda, Suzuki, and Geely among its clients, and exports to more than 10 countries worldwide. This global footprint is a testament to consistent quality, competitive factory pricing, and the ability to meet the strict delivery schedules that automotive programs demand.

Comprehensive Stamping Die Manufacturing Capabilities

At the heart of Dian Stamping's operations is a dedicated die workshop spanning approximately 4,000 m², equipped to produce an annual capacity of about 2,000 sets of medium and small stamping dies. The company specializes in three primary die types:

Material capabilities extend across multiphase steel (HSS and AHSS), aluminum alloys, custom rolled and welded plate, and stainless steel — enabling Dian Stamping to support the industry's shift toward lightweight, high-strength vehicle architectures. With approximately 35 die designers and technicians on staff, the engineering team works from 2D drawings, 3D CAD data, or physical samples to develop optimized tooling solutions.

Precision Sheet Metal Parts for Automotive & Appliance Industries

Beyond tooling, Dian Stamping is a reliable sheet metal parts supplier for both automotive and household appliance sectors. The company's sheet metal parts division handles stamping, bending, laser cutting, welding, and assembly — delivering finished components that range from chassis seats and suspension arms to brackets, panels, and evaporator components for refrigerators.

The production process follows a rigorous workflow: material selection (SPC440, JAC270CN, stainless steel, aluminum), precision die stamping using progressive or transfer techniques, secondary operations including deburring, welding, and powder coating, and final quality assurance through SPC and CMM inspection. This integrated approach means customers receive assembly-ready components, not just raw stampings.

Checking Fixtures & Welding Jigs for Quality Assurance

Dian Stamping's capabilities extend to two critical supporting product lines that ensure production accuracy and repeatability. The company's checking fixture solutions are designed to GD&T standards, enabling rapid, operator-independent inspection of stamped parts and welded assemblies. These fixtures eliminate measurement variability and are essential for high-volume production environments where every part must conform to specification.

Complementing the checking fixtures, Dian Stamping's custom welding jigs are engineered for precise positioning, repeatable welding, and accurate assembly — supporting spot welding, MIG/TIG welding, and robotic welding cells. This combination of die tooling, production stamping, inspection fixtures, and welding fixtures makes Dian Stamping a true one-stop manufacturing partner.

Quality Management System & Certifications

Dian Stamping operates under a quality management system certified to ISO 9001, with manufacturing practices aligned to IATF 16949 standards for automotive production. The company's quality assurance framework includes:

This commitment to quality is backed by a planned 35,000 m² facility expansion featuring new press lines and advanced coating capabilities — a clear signal of the company's investment in long-term capacity and process improvement.

Why Choose Dian Stamping as Your Manufacturing Partner

Several factors distinguish Dian Stamping from other Chinese stamping die manufacturers:

Industries & Applications Served

Dian Stamping's manufacturing capabilities support a wide range of applications:

New Facility Expansion: Scaling for the Future

Dian Stamping is currently executing a major capacity expansion — a new 35,000 m² facility that will house state-of-the-art press lines and advanced coating lines. This expansion, combined with the company's existing 50,000 m² campus, will more than double the production footprint and enable Dian Stamping to take on larger, more complex programs while maintaining the delivery reliability that customers expect.

With an annual die turnover of approximately RMB 50 million and a workforce that includes 35 experienced die designers and technicians, Dian Stamping has the scale, the expertise, and the ambition to serve as a long-term strategic partner for global automotive manufacturers.