For automotive OEMs and Tier 1 suppliers, managing the supply chain for metal-formed components has traditionally meant juggling multiple vendors — one for tooling, another for production stamping, a third for inspection fixtures, and yet another for welding assembly. Each handoff introduces risk: dimensional discrepancies, schedule delays, and communication gaps that ultimately affect part quality and program cost.

DIAN STAMPING (Linhai Dian Mould Co., Ltd.) was built to solve this exact problem. With over 20 years of experience as one of China's most capable stamping die manufacturers, the company has evolved into a fully integrated manufacturing partner that delivers tooling design, high-volume stamping, precision inspection, and welded assembly from a single source. This vertical integration model is increasingly recognized by global automotive buyers as the most efficient and quality-reliable approach to sourcing metal components.

Two Decades of Automotive Tooling Heritage

Founded in 2003 in Huangyan, Taizhou — the historic heart of China's mold-making industry in Zhejiang Province — DIAN STAMPING began its journey as a specialized tooling workshop. Over two decades, the company has grown into a modern manufacturing enterprise with a 50,000 m² production campus, including a dedicated 4,000 m² die workshop and plans for a new 35,000 m² facility equipped with advanced press lines and in-house coating capabilities.

With approximately 110 employees, including 35 experienced die designers and engineers, DIAN STAMPING possesses the engineering depth to handle complex automotive stamping dies programs from concept through production validation. The company's long-standing presence in the industry means its team has accumulated practical knowledge across thousands of tooling projects, covering everything from compact progressive dies for high-speed production to large transfer dies for body-in-white components.

Production Capacity: Setting the Benchmark

When evaluating stamping die manufacturers, capacity is a critical factor. DIAN STAMPING's current annual output of approximately 2,000 sets of medium and small stamping dies — with an annual die turnover of around RMB 50 million — positions it as a high-volume capability provider that can support multiple large-scale automotive programs running concurrently.

This scale of operation means DIAN STAMPING can absorb large die programs without compromising lead times. Typical delivery for steel stamping dies is 30–40 days, and approximately 70 days for casting dies — timelines that are competitive even by global standards. The company's factory-direct model eliminates intermediary markups, allowing it to offer competitive pricing while maintaining robust quality systems.

The One-Stop Advantage: Four Core Capabilities Under One Roof

What truly distinguishes DIAN STAMPING from conventional progressive die suppliers is its full-spectrum service model. Rather than requiring customers to coordinate separate vendors for tooling, production, inspection, and assembly, DIAN STAMPING delivers all four disciplines in-house:

Stamping Dies & Tooling — Progressive dies, transfer dies, tandem/multi-station dies, and single-operation dies for medium to large complex automotive parts. Designed using advanced CAD/CAM systems and validated through rigorous tryout processes.

Sheet Metal Stamping Parts — High-volume production stamping for automotive body, chassis, seating, and interior components. The company supports both prototype and mass production runs, with full material traceability.

Checking Fixtures — Custom-designed, GD&T-oriented inspection fixtures that verify dimensional accuracy against OEM specifications. Every fixture is built to ensure that stamped parts meet exacting quality standards before they reach the assembly line.

Welding Jigs & Assembly Fixtures — Precision welding fixtures designed for accurate, repeatable positioning in robotic and manual welding operations, ensuring consistent weld quality across production batches.

This integrated approach eliminates the coordination overhead, dimensional tolerance stack-up, and quality inconsistencies that arise when multiple suppliers handle different stages of the same program. It also simplifies the qualification process for OEMs, as a single audit covers the entire manufacturing chain.

Quality Management: Certifications That Matter

In the automotive industry, quality certifications are non-negotiable. DIAN STAMPING operates under an ISO 9001 certified quality management system and follows IATF 16949-oriented manufacturing practices — the global standard for automotive quality. The company is also recognized as a National High-Tech Enterprise and holds TUV certification, reflecting its commitment to international quality benchmarks.

Quality control is embedded throughout the production process: from incoming raw material inspection to in-process dimensional checks, and final validation using precision checking fixture systems. The company's in-house R&D laboratory and testing facilities further support continuous quality improvement and process optimization.

Material Versatility: Processing What Others Cannot

Modern automotive designs increasingly demand advanced materials — from high-strength multiphase steel for structural safety components to lightweight aluminum alloys for EV battery enclosures. DIAN STAMPING has extensive hands-on experience processing a wide range of materials:

Trusted by Global Automotive Leaders

DIAN STAMPING's customer portfolio includes some of the most recognized names in global automotive manufacturing, including KIA, BYD, Toyota, Honda, Suzuki, and Geely. The company's products are exported to more than 10 countries across Asia, Europe, and the Americas.

This international exposure has equipped DIAN STAMPING's engineering and project management teams with a deep understanding of diverse quality standards and engineering practices. Whether serving a Korean OEM with strict PPAP requirements or a European Tier 1 supplier with complex GD&T specifications, the company has demonstrated the ability to adapt and deliver.

Application Coverage Across the Vehicle

DIAN STAMPING's tooling and stamped parts span virtually every major automotive system:

Body-in-White Systems — Structural panels, reinforcements, and closure components

Seat Systems — Seat frames, rails, and adjustment mechanisms

Chassis Systems — Suspension components, control arms, and mounting brackets

Door Systems — Door inner and outer panels, impact beams, and hinge reinforcements

Dashboard & Instrument Panel Systems — Cross-car beams, support brackets, and mounting structures

Fuel Tank & Exhaust Systems — Shield components, heat shields, and mounting hardware

Clutch Systems — Clutch housings, pressure plates, and actuation components

The Vertically Integrated Advantage

DIAN STAMPING is more than a metal stamping parts manufacturer — it is a vertically integrated manufacturing partner. The company's affiliated entities, including Linhai Diyao New Technology Co., Ltd. and Taizhou Elay International Trade Co., Ltd., support the full value chain from raw material sourcing to finished product assembly.

In-house capabilities include automated production lines, electrophoresis and powder coating facilities, and welding assembly stations. This means that for OEMs seeking complete sub-assemblies — rather than individual components — DIAN STAMPING can deliver fully finished, coated, and assembled parts ready for direct installation. The result is a streamlined supply chain, reduced logistics costs, and single-point accountability for quality and delivery.