From die design to high-volume production — how LINHAI DIAN MOULD CO., LTD delivers end-to-end stamping solutions for global automotive OEMs.

When automakers and Tier-1 suppliers search for a reliable partner in metal forming, they look for more than just a tooling shop. They need a manufacturer with deep engineering expertise, modern production facilities, rigorous quality systems, and a proven track record of serving global brands. For over two decades, LINHAI DIAN MOULD CO., LTD — operating as Dian Stamping Company — has been precisely that partner. Headquartered in the manufacturing hub of Taizhou, Zhejiang Province, the company has grown from a modest die shop into a full-spectrum stamping die manufacturers powerhouse spanning die design, automotive stamping dies production, sheet metal fabrication, checking fixture manufacturing, and welding jig assembly.

Two Decades of Specialization in Automotive Tooling

Established in 2003, Dian Stamping entered the automotive supply chain at a time when China's manufacturing sector was rapidly modernizing. Today, the company employs approximately 110 skilled professionals, including 35 die designers and technicians, and operates out of a modern facility covering roughly 50,000 m², with a dedicated die workshop of 4,000 m². The company's annual die turnover reaches approximately RMB 50 million, with a capacity to produce around 2,000 sets of medium and small stamping dies per year.

This scale is backed by a customer roster that includes some of the world's most recognizable automotive names — KIA, BYD, Toyota, Honda, Suzuki, and Geely — with exports spanning more than 10 countries. These partnerships are not incidental; they are earned through consistent delivery of precision tooling, competitive factory pricing, and the ability to manage complex, multi-stage projects from concept to production.

Comprehensive Product and Service Portfolio

What sets Dian Stamping apart from many stamping die manufacturers is the breadth of its in-house capabilities. Rather than specializing in a single niche, the company offers a fully integrated suite of services that covers the entire metal parts manufacturing lifecycle:

1. Stamping Dies — Precision Tooling for Complex Geometries

The company designs and builds progressive dies, transfer dies, and tandem/multi-station dies for large and medium-sized complex parts. Applications span body-in-white (BIW) components, door systems, seating systems, instrument panels, fuel-tank systems, exhaust systems, clutch systems, and chassis systems. Materials processed include multiphase steel, aluminum alloys, custom rolled and welded plate, and stainless steel. The die workshop is equipped to handle projects requiring tight tolerances and high-volume production runs.

2. Sheet Metal Parts — From Prototype to Mass Production

Beyond tooling, Dian Stamping is a full-service sheet metal parts manufacturer. The company produces automotive and household-appliance stampings, custom metal fabrications, and welded assemblies. Services include laser cutting, bending, forming, deep drawing, and surface coating. Customers can submit 2D drawings, 3D data, or physical samples for prototyping, and the company offers free metal samples (with freight paid by the customer) to validate quality before full-scale production.

3. Checking Fixtures — GD&T-Oriented Quality Assurance

In stamping production, dimensional accuracy is non-negotiable. Dian Stamping manufactures high-precision checking fixtures designed around GD&T standards. These inspection tools allow rapid, repeatable verification of stamped components and welded assemblies, eliminating measurement variability and ensuring every part meets OEM specifications. As the company's FAQ notes, press dies and checking fixtures are always required as a set — and Dian delivers both.

4. Welding Jigs — Accurate, Repeatable Assembly

The company's welding jig division provides custom fixtures for positioning and repeatable welding of automotive and industrial assemblies. These jigs are designed to work in concert with the company's stamping dies and checking fixtures, creating a seamless production flow from raw metal to finished, assembled component.

Quality Systems and Manufacturing Philosophy

Dian Stamping operates under a quality-management system that is ISO 9001 certified, with manufacturing practices aligned to IATF 16949 standards for automotive production. The company identifies itself as a direct factory — not a trading company — which means customers benefit from transparent pricing, direct communication with engineers, and full control over the manufacturing process.

Typical delivery timelines are 30–40 days for steel stamping dies and approximately 70 days for casting stamping dies, depending on complexity. A planned new 35,000 m² facility featuring additional press lines and coating lines will further expand capacity and reduce lead times in the near future.

Why Global OEMs Choose Dian Stamping

For procurement managers and engineers evaluating new supply partners, the combination of in-house tooling, production-scale stamping, inspection fixture manufacturing, and assembly support makes Dian Stamping a rare one-stop solution. The company's 20-year track record, factory-direct model, and commitment to continuous expansion provide the reliability and cost advantage that automotive supply chains demand.