When sourcing critical tooling for automotive production, buyers face a common challenge: finding a partner who combines precision engineering, manufacturing scale, and consistent quality at competitive factory pricing. For over 20 years, LINHAI DIAN MOULD CO., LTD (DIAN Stamping) has been the answer — a vertically integrated manufacturer of automotive stamping dies, stamped sheet-metal parts, checking fixtures, and welding jigs, serving OEMs including KIA, BYD, Toyota, Honda, Suzuki, and Geely from its 50,000 m² facility in Taizhou, Zhejiang.

A Factory, Not a Trading Company

DIAN Stamping operates as a true manufacturing facility rather than a middleman. The company was established in 2003 and today occupies approximately 50,000 m² of modern production space, including a dedicated 4,000 m² die workshop. With around 110 employees — roughly 35 of whom are experienced die designers and technicians — the company delivers an annual capacity of about 2,000 sets of medium and small stamping dies. Its reported annual die turnover of approximately RMB 50 million reflects a steady, well-established operation trusted by the world's leading automotive brands.

Comprehensive Die and Stamping Capabilities

DIAN Stamping specializes in a full range of progressive die stamping, transfer dies, and tandem/multi-station dies for complex automotive parts. The company's tooling expertise covers body-in-white components, door systems, seating systems, instrument panels, fuel-tank systems, exhaust systems, clutch systems, and chassis systems. Material capabilities include multiphase steel, aluminum alloys, custom rolled and welded plate, and stainless steel — enabling the production of everything from lightweight structural reinforcements to high-strength safety components.

Beyond die manufacturing, the company offers end-to-end services including sheet-metal stamping, laser cutting, welding, and assembly. This vertically integrated approach reduces lead times, simplifies supply chain management, and ensures consistent quality from tool design through final part delivery.

Precision Inspection with Checking Fixtures

Quality assurance is integral to every production run. DIAN Stamping designs and manufactures high-precision checking fixture systems that verify dimensional accuracy of stamped components and welded assemblies. These GD&T-oriented inspection fixtures enable rapid, repeatable part verification — eliminating individual measurement variability and accelerating production throughput. As the company's FAQ notes, press dies and checking fixtures are always required as a set, and DIAN delivers both with the same commitment to precision.

Quality Management and Certifications

DIAN Stamping operates under an ISO 9001 quality-management system and follows IATF 16949-oriented automotive manufacturing practices. The company's dedication to quality is reflected in its rigorous in-process inspections, 3D scanning (CMM), and strain analysis — ensuring that every die and stamped part meets the tight tolerances demanded by automotive OEMs.

Customization, Prototyping, and Delivery

DIAN Stamping accepts custom orders from 2D drawings, 3D data, or physical samples. Prototype services are available for new vehicle programs, and the company offers free metal samples (freight paid by the customer). Typical delivery timelines are 30–40 days for steel stamping dies and approximately 70 days for casting stamping dies, subject to project complexity. A planned 35,000 m² expansion featuring new press and coating lines will further increase capacity and capability for future growth.

Why Global OEMs Choose DIAN Stamping

DIAN's customer roster — KIA, BYD, Toyota, Honda, Suzuki, Geely — speaks to its consistent quality, competitive pricing, and reliable delivery. The company exports to more than 10 countries and positions itself as a long-term supply partner rather than a transactional vendor. Whether you need complex progressive dies, sheet metal parts supplier services, precision welding jigs, or complete checking fixture systems, DIAN Stamping provides a single-source solution backed by two decades of automotive manufacturing expertise.