In the fast-paced world of automotive manufacturing, the quality of your tooling and stamped components directly determines the success of your production line. For over two decades, LINHAI DIAN MOULD CO., LTD — operating as Dian Stamping Company — has been a trusted partner to global automotive OEMs, delivering precision-engineered stamping die manufacturers solutions, high-quality sheet metal parts, and comprehensive inspection and welding fixtures. Headquartered in Huangyan, Taizhou, Zhejiang Province, China, Dian Stamping combines more than 20 years of industry experience with a modern 50,000 m² facility to serve customers including KIA, BYD, Toyota, Honda, Suzuki, and Geely, exporting to over 10 countries worldwide.

A One-Stop Manufacturing Partner for Automotive Tooling

What sets Dian Stamping apart is its ability to deliver end-to-end solutions under one roof. Unlike many suppliers who specialize in only one aspect of the production chain, Dian Stamping covers the full spectrum — from automotive stamping dies design and fabrication to sheet metal stamping, welding, assembly, and quality inspection. This integrated approach eliminates the coordination headaches, quality inconsistencies, and timeline risks that come with managing multiple vendors.

The company's die workshop spans approximately 4,000 m² and is staffed by around 110 skilled professionals, including approximately 35 die designers and technicians. With an annual capacity of about 2,000 sets of medium and small stamping dies and a reported annual die turnover of approximately RMB 50 million, Dian Stamping has the scale and expertise to handle both prototype development and high-volume production runs.

Comprehensive Product and Service Portfolio

Stamping Dies

Dian Stamping manufactures precision stamping tooling across all major die types, including progressive dies, transfer dies, and tandem/multi-station dies. These dies are designed for large and medium-sized complex automotive parts such as body-in-white components, door systems, seating system parts, instrument panels, fuel-tank systems, exhaust systems, and chassis components. The company processes a wide range of materials including multiphase steel, aluminum, custom rolled and welded plate, and stainless steel, ensuring compatibility with modern automotive lightweighting and strength requirements.

Sheet Metal Parts

Beyond tooling, Dian Stamping is a full-service sheet metal fabrication partner. The company produces automotive and household-appliance stampings, custom metal parts, and welded assemblies. From automotive body panels and structural reinforcements to refrigerator brackets and evaporator panels, the company's stamping capabilities include progressive and transfer stamping, deep drawing and forming, laser cutting, and powder coating. Secondary operations such as deburring, bending, welding, and spot welding are all performed in-house, ensuring assembly-ready components that meet OEM specifications.

Checking Fixtures

Precision measurement is critical in automotive manufacturing. Dian Stamping designs and builds high-precision checking fixture solutions that enable rapid, repeatable inspection of stamped components and welded assemblies. These GD&T-oriented fixtures allow operators to verify dimensional accuracy in seconds, eliminating the individual measurement errors associated with manual tools like vernier calipers and micrometers. For any production facility, press dies and checking fixtures go hand in hand — and Dian Stamping delivers both.

Welding Jigs

Consistent, repeatable welding requires precise positioning. Dian Stamping's custom welding jigs and fixtures are designed to hold components in exact alignment during the welding process, ensuring weld quality, dimensional accuracy, and production repeatability. Whether for spot welding, MIG welding, or robotic welding cells, the company's welding jig solutions support a wide range of automotive and industrial assembly applications.

Quality Assurance Backed by Industry Standards

Dian Stamping operates under a quality management system certified to ISO 9001, with manufacturing practices aligned to IATF 16949 automotive standards. The company employs rigorous quality control measures throughout the production process, including in-line inspections, 3D scanning (CMM), and strain analysis to ensure every component meets OEM specifications. For customers with complex dimensional requirements, the company's checking fixtures provide an additional layer of quality assurance, enabling high-volume inspection with consistent accuracy.

Factory-Direct Pricing and Fast Delivery

As a factory rather than a trading company, Dian Stamping offers competitive factory-direct pricing. Typical delivery times are 30–40 days for steel stamping dies and approximately 70 days for casting stamping dies, subject to project complexity. The company also provides prototype services, customization from 2D drawings, 3D data, or physical samples, and free metal samples upon request (with freight paid by the customer). This combination of factory pricing, fast turnaround, and flexible customization makes Dian Stamping an attractive partner for OEMs and Tier 1 suppliers seeking cost-competitive, high-quality tooling and parts.

Proven Track Record with Global OEMs

Trust is earned through results. Dian Stamping's customer roster includes some of the world's most demanding automotive brands — KIA, BYD, Toyota, Honda, Suzuki, and Geely. The company's dies and stamped parts are used in critical vehicle systems, from body-in-white structures and door assemblies to seating systems, exhaust components, and chassis parts. With exports to more than 10 countries, Dian Stamping has demonstrated the ability to meet international quality standards, manage complex logistics, and build long-term supply relationships with global customers.

Looking Ahead: Expansion and Innovation

Dian Stamping is not resting on its two decades of experience. The company is investing in a new 35,000 m² facility featuring state-of-the-art press lines and coating capabilities, designed to increase production capacity and introduce new processing technologies. This expansion reflects Dian Stamping's commitment to continuous improvement and its ambition to serve an even broader global customer base in the years ahead.