In today's automotive supply chain, the difference between a reliable stamping partner and an average vendor comes down to one thing: vertical integration. When a manufacturer controls die design, die making, tryout, stamping production, and quality inspection under one roof, the result is tighter tolerances, faster turnaround, and lower per-part cost. That is exactly the value proposition that LINHAI DIAN MOULD CO., LTD — better known as Dian Stamping — brings to global automotive OEMs and Tier suppliers.

Established in 2003 in Huangyan, Taizhou, Zhejiang Province, Dian Stamping has grown into a full-service manufacturer of automotive stamping dies, stamped sheet metal parts, checking fixtures, and welding jigs. With more than 20 years of industry experience, the company serves customers including KIA, BYD, Toyota, Honda, Suzuki, and Geely, and exports to more than 10 countries worldwide.

A Manufacturing Facility Built for Scale and Precision

Dian Stamping's manufacturing campus spans approximately 50,000 m², with a dedicated die workshop of 4,000 m². The company employs around 110 people, including approximately 35 die designers and technicians who manage the entire tooling lifecycle — from concept and CAD modeling to machining, assembly, and tryout.

The company's annual die turnover is approximately RMB 50 million, and a new 35,000 m² facility featuring advanced press and coating lines is already in planning to meet growing global demand. This capacity allows Dian Stamping to handle everything from prototype runs to high-volume production programs with consistent quality and on-time delivery.

Full Spectrum of Stamping Capabilities

Dian Stamping offers a comprehensive range of die technologies to accommodate diverse part geometries and production volumes. Whether a project calls for high-speed progressive tooling or large-panel transfer dies, the engineering team has the experience to deliver:

Progressive die stamping is a core specialty at Dian Stamping. Multi-station progressive dies allow the company to produce complex sheet metal parts in a single press stroke — from blanking and forming to piercing and cutoff — delivering high-volume output with exceptional dimensional consistency. For larger automotive panels and structural components, transfer die and tandem die solutions provide the flexibility needed for deep-drawn geometries and multi-step forming sequences.

The company processes a wide range of materials including multiphase steel, aluminum, custom rolled and welded plate, and stainless steel — covering the material diversity that modern automotive engineering demands, from lightweight body panels to high-strength structural reinforcements.

Beyond Dies: End-to-End Sheet Metal and Assembly Services

What sets Dian Stamping apart from many die shops is its ability to produce finished sheet metal parts at scale. The company's sheet metal fabrication capabilities include stamping, laser cutting, bending, welding, and assembly — enabling customers to receive production-ready components rather than raw stampings.

Application areas span the full vehicle architecture:

Quality Assurance with Precision Checking Fixtures

Dian Stamping understands that a stamping die is only as good as the inspection system that validates its output. That is why the company designs and builds its own checking fixture systems — precision inspection tools that confirm whether each stamped workpiece conforms to the specified GD&T dimensions.

Checking fixtures allow operators to inspect large volumes of parts rapidly and consistently, eliminating the individual measurement variation that can occur with manual tools like calipers or micrometers. At Dian Stamping, press dies and checking fixtures are always delivered as a matched set, ensuring that every part leaving the production floor meets the customer's dimensional requirements.

The company's quality management system is certified under ISO 9001, with manufacturing and quality practices aligned to IATF 16949 standards. In-line inspections, 3D scanning (CMM), and strain analysis are integrated into the production workflow to maintain tight tolerances across all programs.

Customization, Prototyping, and Fast Delivery

Dian Stamping operates as a factory-direct manufacturer — not a trading company — which means customers benefit from direct engineering support, transparent pricing, and shorter lead times. The company accepts custom orders from 2D drawings, 3D CAD data, or physical samples, and offers prototype services to validate designs before mass production.

Typical delivery timelines are 30–40 days for steel stamping dies and approximately 70 days for casting stamping dies, depending on project complexity. Free metal samples are available upon request (freight paid by the customer).

Global Customer Base and Export Reach

With a customer portfolio that includes KIA, BYD, Toyota, Honda, Suzuki, and Geely, Dian Stamping has demonstrated its ability to meet the rigorous quality, delivery, and cost requirements of leading automotive OEMs. The company's export network spans more than 10 countries, serving both OEMs and Tier suppliers with custom tooling, high-volume stamped parts, inspection fixtures, and welding and assembly solutions.

As the automotive industry continues to evolve toward lighter materials, more complex geometries, and tighter cost targets, the value of a vertically integrated stamping partner becomes increasingly clear. Dian Stamping's combination of in-house die engineering, large-scale production capacity, precision inspection, and global shipping capability positions it as a strong, long-term partner for automotive manufacturers worldwide.