In today's automotive industry, the margin between a successful vehicle launch and a costly production delay often comes down to one critical factor: the quality of the tooling and stamped components that form the backbone of every car. Global automotive OEMs and Tier 1 suppliers are constantly searching for manufacturing partners who can deliver precision, consistency, and cost efficiency at scale. LINHAI DIAN MOULD CO., LTD, operating as Dian Stamping Company, has spent the past two decades building exactly that reputation — serving renowned automakers including KIA, BYD, Toyota, Honda, Suzuki, and Geely with high-quality automotive stamping dies, stamped sheet metal parts, and precision inspection tooling.

A Manufacturing Powerhouse in Zhejiang, China

Established in 2003 in Huangyan, Taizhou, Zhejiang Province — a region long recognized for its robust mold and die manufacturing ecosystem — Dian Stamping operates a modern facility spanning approximately 50,000 m², with a dedicated die workshop of around 4,000 m². The company employs roughly 110 skilled professionals, including approximately 35 die designers and technicians who bring deep expertise in tool and die engineering. This scale allows Dian Stamping to achieve an annual production capacity of approximately 2,000 sets of medium and small stamping dies, with a reported annual die turnover of around RMB 50 million.

A new 35,000 m² facility is currently being developed, featuring additional press lines and advanced coating capabilities — a clear signal of the company's commitment to expanding capacity and adopting newer manufacturing technologies.

Comprehensive Stamping Die Solutions

Dian Stamping's core competency lies in the design and manufacture of high-precision stamping tooling. The company's die portfolio covers the full spectrum of metal forming needs:

• Progressive Dies — Multiple operations including blanking, forming, punching, coining, and cutoff are performed in a single pass through the press, delivering exceptional efficiency for high-volume production.
• Transfer Dies — Engineered for complex large and medium-sized parts that require multiple forming stations, with the workpiece transferred between stations by a transfer system.
• Tandem Dies — Designed specifically for car body structural components made from high-tensile materials, where multiple presses work in sequence to produce large, complex panels.

All die designs are developed using industry-standard CAD/CAM software including AutoCAD, SolidWorks, and CATIA, ensuring compatibility with global OEM engineering workflows and precise translation of customer specifications into production-ready tooling.

Precision Sheet Metal Parts for Automotive and Beyond

Beyond tooling, Dian Stamping is a reliable supplier of custom sheet metal parts serving the automotive, household appliance, and general industrial sectors. With over 20 years of hands-on experience, the company offers end-to-end sheet metal fabrication services from prototyping through high-volume production.

In-house capabilities include laser cutting, bending, welding, powder coating, and custom sheet metal fabrication. This vertical integration means customers receive fully finished components — from raw material to surface-treated, ready-to-assemble parts — all under one roof, reducing lead times and eliminating the coordination headaches of managing multiple subcontractors.

Quality Assurance Through Precision Checking Fixtures

In automotive manufacturing, dimensional accuracy is non-negotiable. A part that deviates by even a fraction of a millimeter can cause assembly issues, noise, vibration, and long-term durability problems. This is where Dian Stamping's checking fixture capabilities set the company apart.

Dian Stamping designs and builds high-precision checking fixtures that are fully compliant with GD&T (Geometric Dimensioning and Tolerancing) standards. These fixtures enable rapid, repeatable dimensional verification of stamped components and welded assemblies, ensuring that every part meets the strict quality requirements of automotive OEMs. Importantly, the company delivers press dies and checking fixtures as a matched set, guaranteeing that the inspection tooling is perfectly aligned with the production tooling from day one.

Welding Jigs and Assembly Fixtures for Production Accuracy

Consistent weld quality and assembly precision depend heavily on the quality of the fixturing. Dian Stamping manufactures custom welding jig solutions designed to hold components in exact position during the welding process, ensuring repeatable joint quality and dimensional stability.

The company's welding capabilities encompass robotic MIG welding, spot welding, and manual welding techniques, supported by custom-designed jigs and fixtures for each application. Whether the requirement is a simple corner jig or a complex multi-axis welding fixture for chassis components, Dian Stamping's engineering team designs and builds the tooling to match the specific production process.

Application-Specific Engineering Expertise

Dian Stamping's experience spans a wide range of automotive subsystems, making the company a versatile partner for OEMs and suppliers alike:

• Body-in-White Systems — Structural stampings and assemblies for the vehicle's main body frame.
• Door Systems — Inner and outer panels, reinforcements, and hinge reinforcements.
• Seating Systems — Seat frame components, rails, and adjustment mechanisms.
• Instrument Panel and Dashboard Systems — Structural brackets and support components.
• Exhaust Systems — Heat shields, brackets, and connector components.
• Chassis Systems — Suspension components, subframe brackets, and structural reinforcements.
• Fuel Tank and Clutch Systems — Specialized stampings for powertrain and fuel system assemblies.

Material Versatility: From Multiphase Steel to Aluminum

Modern automotive design increasingly calls for lightweight materials and advanced high-strength steels. Dian Stamping has developed the capability to process a diverse range of materials, including:

• Multiphase steel parts for high-strength structural applications
• Aluminum parts for lightweight vehicle programs
• Custom rolled steel and welded plate parts for specialized applications
• Stainless steel parts for corrosion-resistant and high-temperature components

This material flexibility allows customers to consolidate their supplier base — rather than sourcing different materials from different manufacturers, Dian Stamping can handle the full mix in-house.

Quality Systems and Delivery Commitment

Dian Stamping operates under an ISO 9001 quality management system, with manufacturing and quality practices aligned to IATF 16949 automotive standards. The company is a factory, not a trading company — which means customers benefit from direct factory pricing, full control over production quality, and transparent communication throughout the project lifecycle.

Typical delivery lead times are 30–40 days for steel stamping dies and approximately 70 days for casting stamping dies, depending on the complexity and specific requirements of each project. Prototype services are available for customers who need to validate designs before committing to full production tooling.

Why Global OEMs Choose Dian Stamping