When sourcing automotive stamping dies and stamped metal components, automotive OEMs and Tier-1 suppliers face a critical challenge: finding a manufacturing partner that combines precision engineering, production scale, and cost competitiveness under one roof. DIAN STAMPING, operating under LINHAI DIAN MOULD CO., LTD, has been delivering exactly that since 2003. Headquartered in Huangyan, Taizhou, Zhejiang Province, the company serves global automotive brands including KIA, BYD, Toyota, Honda, Suzuki, and Geely, with exports reaching more than 10 countries.

Table of Contents

• 1. Manufacturing Scale and Facility Capabilities
• 2. Comprehensive Product and Service Portfolio
• 3. Quality Assurance and Certification
• 4. Customization and Prototyping Services
• 5. Why Global OEMs Choose DIAN STAMPING
• 6. Get in Touch with DIAN STAMPING

1. Manufacturing Scale and Facility Capabilities

DIAN STAMPING operates a modern facility covering approximately 50,000 m², with a dedicated die workshop of roughly 4,000 m². The company employs around 110 people, including approximately 35 die designers and technicians. With an annual capacity of about 2,000 sets of medium and small stamping dies and a reported annual die turnover of approximately RMB 50 million, DIAN is equipped to handle high-volume production demands. A planned 35,000 m² expansion featuring new press and coating lines will further extend its capabilities.

The company supports progressive die stamping, transfer die stamping, and tandem/multi-station die stamping. It processes a wide range of materials including multiphase steel, aluminum, custom rolled and welded plate, and stainless steel, making it suitable for diverse automotive applications from body-in-white to chassis systems.

2. Comprehensive Product and Service Portfolio

DIAN STAMPING organizes its offerings into four main categories, each designed to support the full lifecycle of automotive part manufacturing:

Stamping Dies — Precision stamping tooling including progressive, transfer, and tandem dies for large and medium-sized complex parts. These dies are used across body-in-white, door systems, seating systems, instrument panels, and more.

Sheet Metal Parts — Automotive and household-appliance stamping, sheet-metal fabrication, custom metal parts, and welding assemblies. DIAN works with materials such as SPC440, JAC270CN, stainless steel, and aluminum to produce brackets, panels, hinges, heat shields, and structural components.

Checking Fixture — High-precision, GD&T-oriented inspection fixtures that allow manufacturers to verify dimensional accuracy of stamped parts quickly and consistently. A checking fixture is essential at production sites because it eliminates individual measurement variation and enables high-throughput quality control.

Welding Jig — Custom welding jig solutions for accurate, repeatable positioning and assembly of automotive components. These fixtures support spot welding, TIG welding, and robotic welding processes.

3. Quality Assurance and Certification

Quality is embedded in every stage of DIAN's manufacturing process. The company operates an ISO 9001-certified quality management system and follows IATF 16949-oriented automotive manufacturing practices. In-line inspections, 3D coordinate measuring machine (CMM) scanning, and strain analysis ensure that every stamped part meets OEM specifications. The use of checking fixtures on the production floor further guarantees that dimensional deviations are caught early, preventing defective parts from moving downstream.

4. Customization and Prototyping Services

DIAN STAMPING accepts custom orders from 2D drawings, 3D data (CAD/STEP files), or physical samples. Prototype services are available for new vehicle programs and product development cycles. The typical delivery time is 30–40 days for steel stamping dies and approximately 70 days for casting stamping dies, subject to project complexity. Free metal samples may be offered with freight paid by the customer, allowing buyers to evaluate quality before committing to volume production.

5. Why Global OEMs Choose DIAN STAMPING

Several factors make DIAN STAMPING a preferred partner for automotive OEMs and Tier suppliers worldwide:

Factory-direct pricing. As a manufacturing facility rather than a trading company, DIAN offers competitive pricing without intermediary markups. This is particularly important for high-volume stamping programs where per-part cost savings have a significant cumulative impact.

End-to-end capability. From die design and fabrication to stamping production, welding assembly, and inspection fixture manufacturing, DIAN provides a one-stop solution that reduces supply chain complexity and lead times.

Proven OEM track record. With clients including KIA, BYD, Toyota, Honda, Suzuki, and Geely, DIAN has demonstrated its ability to meet the rigorous quality and delivery standards of major automotive manufacturers.

Application breadth. DIAN's products cover body-in-white, door systems, seating systems, instrument panels, fuel-tank systems, exhaust systems, clutch systems, and chassis systems — making it a versatile partner for nearly any automotive stamping requirement.