For over 20 years, DIAN STAMPING has been at the forefront of precision progressive die stamping, serving renowned automotive brands including KIA, BYD, Toyota, Honda, Suzuki, and Geely. Headquartered in Linhai, Taizhou, Zhejiang Province, the company operates a 50,000 m² modern facility equipped with automated production lines, R&D laboratories, and full in-house processing capabilities — from die design and development through sheet metal stamping, welding, powder coating, and final assembly. With no outsourcing across the entire value chain, DIAN offers a level of quality control, cost efficiency, and lead-time reliability that few competitors can match.

A Complete Tooling Ecosystem

At the core of DIAN's offering is its comprehensive tooling division. The company designs and manufactures a full spectrum of automotive stamping dies, including progressive dies, transfer dies, and tandem dies for large and medium-sized complex parts. The die workshop alone spans approximately 4,000 m² and is staffed by 35 experienced die designers and technicians. With an annual capacity of approximately 2,000 sets of medium and small stamping dies and a reported annual die turnover of around RMB 50 million, DIAN has the scale and expertise to handle programs of any size.

The company's metal stamping dies are engineered using advanced CAD/CAM design systems, precision CNC machining, and rigorous tryout and testing protocols. This ensures that every die delivers tight tolerances, long production life, and consistent part quality — critical factors for automotive safety and performance requirements.

Beyond Dies: Full-Spectrum Metal Stamping and Fabrication

DIAN STAMPING is not just a die manufacturer — it is a full-service metal stamping parts manufacturer capable of producing high-volume stamped components across multiple material types. The company processes multiphase steel, aluminum alloys, custom rolled steel, welded plate, and stainless steel, serving a wide range of automotive applications including body-in-white, door systems, seating systems, instrument panels, fuel-tank systems, exhaust systems, clutch systems, and chassis systems.

DIAN's sheet metal stamping capabilities cover everything from prototyping to high-volume production, with secondary operations including laser cutting, bending, welding, and powder coating performed entirely in-house. This vertical integration eliminates the delays, communication gaps, and quality variance that commonly arise when multiple subcontractors are involved.

Precision Inspection with Checking Fixtures

Quality assurance is built into every stage of DIAN's production process. The company designs and manufactures high-precision checking fixtures and inspection tooling that verify dimensional accuracy against GD&T standards. These checking fixtures enable rapid, repeatable inspection of large batches of stamped parts, eliminating individual measurement variations and ensuring every component meets OEM specifications before it moves to the next production stage.

As the company's website states, "Press dies and checking fixtures are necessary as a set" — a philosophy that reflects DIAN's commitment to delivering complete, production-ready solutions rather than isolated tooling components.

Welding Jigs and Assembly Integration

DIAN's one-stop model extends to welding and assembly. The company manufactures custom welding jigs and fixtures designed to enhance accuracy, repeatability, and efficiency in welding processes. Combined with its in-house welding assembly capabilities, DIAN can deliver fully assembled stamped components ready for direct installation into vehicle production lines — saving customers significant time and coordination overhead.

Certifications and Industry Recognition

These certifications reflect DIAN's commitment to international quality standards and continuous improvement — essential credentials for any supplier serving global automotive OEMs.

Customization and Customer Support

DIAN STAMPING supports full customization from 2D drawings, 3D data, or physical samples. The company offers free metal samples (with freight paid by the customer), prototype services, and engineering support to help bring new designs to production efficiently. Typical lead times are 30–40 days for steel stamping dies and approximately 70 days for casting stamping dies, depending on project complexity.

As a factory-direct manufacturer — not a trading company — DIAN offers competitive pricing while maintaining stable quality and reliable delivery schedules. The company's 110-strong workforce, 35,000 m² planned new facility, and ongoing investment in automated production lines and electrophoretic coating capabilities demonstrate a long-term commitment to serving the global automotive industry.

Global Reach, Local Expertise

DIAN STAMPING exports to more than 10 countries and has established long-term supply relationships with major automotive OEMs. The company's affiliated entities — Linhai Diyao New Technology Co., Ltd. and Taizhou Elay International Trade Co., Ltd. — support its international operations and supply chain management.

Whether you need a single progressive die for a new part program or a complete tooling package plus high-volume stamping production, DIAN STAMPING has the engineering depth, manufacturing capacity, and quality systems to deliver.