In today's automotive supply chain, the line between a tooling supplier and a full-production partner is increasingly blurred. OEMs and Tier-1 suppliers no longer look for separate vendors for dies, stamped parts, checking fixtures, and welding assemblies. They want a single, accountable partner who can deliver end-to-end manufacturing solutions — from the first die design to the finished welded assembly. This is precisely the gap that stamping die manufacturers like Dian Stamping (LINHAI DIAN MOULD CO., LTD) have been built to fill.

Founded in 2003 and headquartered in Huangyan, Taizhou, Zhejiang Province, Dian Stamping brings over 20 years of continuous experience in the design and manufacture of automotive stamping dies, stamped sheet-metal components, checking fixtures, and welding jigs. The company's facility covers approximately 50,000 square meters, with a dedicated die workshop of 4,000 square meters and a planned 35,000-square-meter expansion featuring new press lines and coating capabilities. With around 110 employees — including 35 die designers and technicians — Dian Stamping produces approximately 2,000 sets of medium and small stamping dies annually, with a reported annual die turnover of roughly RMB 50 million.

What sets Dian Stamping apart from many competitors is its comprehensive in-house capability. The company offers progressive die stamping, transfer dies, and tandem/multi-station dies, covering everything from body-in-white components and door systems to seating structures, instrument panels, fuel-tank assemblies, exhaust systems, clutch systems, and chassis parts. Material processing capabilities include multiphase steel, aluminum alloys, custom rolled and welded plate, and stainless steel — making the company a versatile partner for both traditional ICE vehicles and new-energy vehicle platforms.

Beyond die manufacturing, Dian Stamping provides stamped sheet-metal parts, checking fixtures for GD&T inspection, and custom welding jigs for accurate, repeatable assembly. This one-stop model eliminates the coordination overhead and quality inconsistencies that arise when sourcing from multiple suppliers.

Quality assurance is a non-negotiable requirement in automotive manufacturing, and Dian Stamping has built its systems accordingly. The company operates under an ISO 9001 quality management system and follows IATF 16949-oriented automotive manufacturing practices. It has been recognized as a National High-Tech Enterprise and holds TUV certification, along with multiple patents. The company's affiliated entities — Linhai Diyao New Technology Co., Ltd. and Taizhou Elay International Trade Co., Ltd. — further support its R&D and export capabilities.

Customer references include major OEMs such as KIA, BYD, Toyota, Honda, Suzuki, and Geely, with exports reaching more than 10 countries. This global footprint demonstrates that Dian Stamping's dies and parts consistently meet the dimensional and durability standards required by leading automotive brands.

Dian Stamping accepts custom orders from 2D drawings, 3D CAD data, or physical samples. Prototype services are available for new product development. Typical delivery is 30-40 days for steel stamping dies and approximately 70 days for casting stamping dies, subject to project complexity. As a factory-direct manufacturer with no outsourcing, the company offers competitive pricing while maintaining full control over quality and delivery schedules.

The company also provides free metal samples (freight collect) to help prospective customers evaluate material quality and dimensional accuracy before committing to volume production. This low-risk approach to supplier qualification is particularly valued by OEMs and Tier suppliers who need to validate tooling performance before ramp-up.

The traditional automotive supply chain separates tooling, stamping, inspection, and welding into distinct procurement categories. This fragmentation creates hidden costs: communication gaps between suppliers, dimensional discrepancies between die and fixture, and extended lead times for problem resolution. Dian Stamping's integrated model addresses these pain points directly. When the same team designs the die, stamps the part, builds the checking fixture, and fabricates the welding jig, each step aligns with the preceding one. Tolerance stack-up is minimized, and the path from prototype to production is measurably shorter.

Dian Stamping's products and tooling are deployed across eight major automotive application areas:

With the global automotive industry's accelerating shift toward electric vehicles, the demand for lightweight, high-strength stamped components has never been greater. Dian Stamping's ability to process advanced high-strength steel (AHSS), aluminum, and multiphase steel positions it well to serve the EV supply chain. Battery case components, motor housing brackets, and lightweight chassis parts are all within the company's manufacturing scope. The planned 35,000 m² expansion with new press and coating lines signals a clear commitment to growing capacity for the next generation of automotive production.