In today's competitive automotive supply chain, the quality of your tooling directly determines the quality of your production. Whether you need automotive stamping dies for body-in-white panels, precision sheet metal parts for seating systems, or inspection fixtures for quality assurance, selecting the right manufacturing partner is a strategic decision that impacts cost, lead time, and long-term reliability.

More Than Two Decades of Die Expertise

Established in 2003, LINHAI DIAN MOULD CO., LTD (Dian Stamping) brings over 20 years of concentrated experience in the design and manufacture of stamping dies, sheet metal parts, checking fixtures, and welding jigs. Headquartered in Huangyan, Taizhou, Zhejiang Province, the company has grown from a specialized die shop into a comprehensive one-stop manufacturing partner for automotive OEMs and Tier-1 suppliers across the globe.

Dian Stamping's facility spans approximately 50,000 m², with a dedicated die workshop of 4,000 m². The company employs roughly 110 people, including 35 die designers and technicians, and achieves an annual output of about 2,000 sets of medium and small stamping dies. With an annual die turnover of approximately RMB 50 million, the company has the scale and stability to support both high-volume production runs and complex custom projects.

A Full Spectrum of Stamping and Tooling Services

Unlike many suppliers that specialize in only one segment, Dian Stamping offers end-to-end capabilities spanning the entire manufacturing value chain — from die design and fabrication to production stamping, inspection, and assembly.

Stamping Dies

As experienced stamping die manufacturers, Dian Stamping produces progressive dies, transfer dies, and tandem/multi-station dies for large and medium-sized complex parts. The dies are engineered to process a wide range of materials including multiphase steel, aluminum alloys, custom rolled and welded plate, and stainless steel. Applications cover body-in-white, door systems, seating systems, instrument panels, fuel-tank systems, exhaust systems, clutch systems, and chassis systems.

Sheet Metal Parts

Beyond tooling, the company delivers high-volume stamped sheet metal parts for automotive and household appliance applications. Capabilities include stamping, metal laser cutting, bending, forming, welding, and powder coating — all under one roof. This integrated approach eliminates the coordination headaches and quality inconsistencies that come with using multiple vendors.

Checking Fixtures

Quality assurance is only as reliable as the inspection tools used to verify it. Dian Stamping designs and builds high-precision checking fixture solutions tailored to GD&T standards. These fixtures enable fast, repeatable inspection of complex stamped parts, eliminating individual measurement variation and ensuring every component meets OEM specifications before it leaves the factory.

Welding Jigs

For accurate, repeatable welding and assembly, Dian Stamping supplies custom welding jigs designed to hold tight tolerances through high-volume production cycles. These fixtures are built to integrate seamlessly with the company's stamped parts, providing a complete manufacturing solution from raw material to finished assembly.

Why Global OEMs Trust Dian Stamping

Dian Stamping's customer roster includes major automotive names such as KIA, BYD, Toyota, Honda, Suzuki, and Geely. The company exports to more than 10 countries, serving markets across Asia, Europe, and the Americas. What makes Dian Stamping a preferred partner for these demanding customers?

1. Factory-Direct Pricing — As a direct manufacturer rather than a trading company, Dian Stamping eliminates middleman markups, offering competitive pricing without compromising on quality.
2. Customization Flexibility — The company works from 2D drawings, 3D data, or physical samples. Prototype services are available for validation before mass production.
3. ISO 9001 Quality Management — The quality system is ISO 9001-certified, with practices aligned to IATF 16949-oriented automotive manufacturing standards.
4. Reliable Lead Times — Typical delivery is 30–40 days for steel stamping dies and approximately 70 days for casting stamping dies, subject to project scope.
5. Diverse Material Capability — From high-strength steel to aluminum and stainless steel, the die team has deep experience with the materials modern automotive programs demand.

Quality-Backed, Customer-Driven

At Dian Stamping, quality is not an afterthought — it is built into every stage of the process. From die design validation through tryout, production stamping, and final inspection, each step follows documented procedures. The company's checking fixture expertise ensures that parts are verified against design intent quickly and accurately, reducing the risk of downstream assembly issues.

Free metal samples are available upon request (freight paid by the customer), allowing potential partners to evaluate material quality, dimensional accuracy, and surface finish before committing to full production. This transparency reflects the company's confidence in its manufacturing capabilities and its commitment to building long-term, trust-based relationships.

Looking Ahead: Expanded Capacity

Dian Stamping is currently developing a new 35,000 m² facility featuring advanced press lines and coating lines. This expansion will significantly increase production capacity, shorten lead times, and enable the company to take on even larger and more complex projects. For existing and future customers, this means greater supply security and the ability to scale alongside a growing partner.