When it comes to sourcing high-quality automotive stamping dies and precision sheet metal components, manufacturers worldwide face a common challenge: finding a partner that combines technical expertise, large-scale production capacity, and consistent quality control under one roof. LINHAI DIAN MOULD CO., LTD (Dian Stamping) has been solving this problem for global automotive OEMs and Tier-1 suppliers since 2003.

Headquartered in Huangyan, Taizhou, Zhejiang Province — a region renowned for China's mould and die manufacturing cluster — Dian Stamping operates a modern facility covering approximately 50,000 m², with a dedicated die workshop of 4,000 m². The company's annual capacity reaches about 2,000 sets of medium and small stamping dies, with an annual die turnover of approximately RMB 50 million. This is not a trading company; it is a full-fledged factory that delivers end-to-end solutions from tool design to mass production.

Comprehensive Service Portfolio

Dian Stamping's capabilities span the entire metal forming value chain, organized into four core service areas:

• Stamping Dies — Precision tooling encompassing progressive, transfer, and tandem dies for large and medium-sized complex automotive parts. The die design team of approximately 35 engineers uses advanced CAD/CAM software to ensure optimal die structure, longevity, and repeatability.
• Sheet Metal Parts — High-volume production of stamped components for automotive body-in-white, door systems, seating systems, instrument panels, fuel-tank systems, exhaust systems, clutch systems, and chassis systems. The company also serves the household appliance industry with brackets, panels, hinges, and structural parts.
• Checking Fixture — High-precision, GD&T-oriented inspection fixtures that enable rapid dimensional verification of stamped parts and welded assemblies. Every press die needs a matching checking fixture to eliminate measurement variability and ensure consistent quality.
• Welding Jig — Custom welding fixtures designed for accurate, repeatable positioning during welding and assembly operations, supporting both automotive and general industrial applications.

Manufacturing Scale at a Glance

A new 35,000 m² facility featuring advanced press and coating lines is currently in development, further expanding the company's production capacity and process capabilities.

Material Versatility and Process Capabilities

Dian Stamping processes a wide range of materials to meet diverse customer requirements. The company handles multiphase steel, aluminum alloys, custom rolled and welded plate, and stainless steel. Whether you need progressive die stamping for high-volume, complex geometries or transfer dies for larger panels, the technical team has the expertise to deliver.

Secondary operations including laser trimming, hemming, flanging, and spot welding are available in-house, ensuring that stamped components are delivered assembly-ready. This integrated approach reduces lead times and eliminates the coordination headaches of managing multiple suppliers.

Quality Assurance Built Into Every Step

Quality at Dian Stamping is not an afterthought — it is embedded in every stage of the manufacturing process. The company operates under an ISO 9001 quality management system, with quality practices aligned to IATF 16949 automotive industry standards.

Each stamping die is paired with a corresponding checking fixture to enable rapid, repeatable dimensional verification. In-line inspections, 3D scanning (CMM), and strain analysis are employed throughout production to ensure compliance with OEM specifications. Prototype services are also available, allowing customers to validate designs before committing to full-scale production.

Global Customer Base and OEM Track Record

With more than two decades of industry experience, Dian Stamping has built a reputation for reliability and precision among global automotive brands. The company's customer roster includes KIA, BYD, Toyota, Honda, Suzuki, and Geely. Products are exported to more than 10 countries, serving OEMs and Tier suppliers across Asia, Europe, and the Americas.

This extensive track record demonstrates Dian Stamping's ability to meet the rigorous quality, delivery, and cost targets demanded by the global automotive industry. Whether it is a new vehicle program requiring fast die development and tryout, or an ongoing production program needing consistent, high-volume stamped parts, the company has the experience and infrastructure to deliver.

Customization and Delivery

Dian Stamping accepts custom orders based on 2D drawings, 3D data, or physical samples. Typical lead times 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, with freight paid by the customer. The company's direct factory pricing model ensures cost advantages of 20–30% compared to Western suppliers, without compromising on quality or delivery reliability.

Why Choose Dian Stamping?

In a competitive global market, the choice of manufacturing partner can make or break a program. Here is what sets Dian Stamping apart:

• Factory-Direct Pricing: No middlemen. You deal directly with the manufacturer.
• End-to-End Capability: From die design and tryout to stamping, welding, and assembly — all under one roof.
• Proven OEM Track Record: Serving seven global automotive brands across 10+ countries.
• Scalable Production: 50,000 m² facility with 2,000 sets/year die capacity and expanding.
• Technical Depth: 35 die designers and technicians using advanced CAD/CAM and CMM inspection.
• Quality Commitment: ISO 9001 certified with IATF 16949-oriented practices.
• Flexible Customization: Accepts 2D drawings, 3D data, or physical samples.