Two Decades of Dedication to Automotive Tooling

Established in 2003 in the industrial hub of Huangyan, Taizhou, Zhejiang Province, LINHAI DIAN MOULD CO., LTD (operating as Dian Stamping) has spent more than 20 years refining its craft. The company began as a specialized mold and die workshop and has since grown into a comprehensive manufacturing partner serving some of the world's most demanding automotive brands.

Today, Dian Stamping operates out of a modern facility spanning approximately 50,000 square meters, with a dedicated die workshop of 4,000 square meters. A planned 35,000-square-meter expansion featuring new press lines and advanced coating capabilities underscores the company's commitment to scaling alongside its customers' growing needs.

Comprehensive Product Portfolio for Automotive & Industrial Applications

Dian Stamping offers a fully integrated suite of tooling and manufacturing services under one roof. Unlike many suppliers who specialize in only one segment, Dian provides end-to-end solutions spanning tool design, die manufacturing, production stamping, inspection, and assembly — all managed within a single quality system.

The company's die portfolio covers progressive dies, transfer dies, and tandem/multi-station dies, capable of processing multiphase steel, aluminum alloys, custom rolled and welded plate, and stainless steel. Application areas span body-in-white, door systems, seating systems, instrument panels, fuel-tank systems, exhaust systems, clutch systems, and chassis systems — making Dian a versatile partner for virtually any automotive subsystem.

Quality Systems That Automotive OEMs Trust

Quality assurance in automotive stamping is non-negotiable. Dian Stamping operates under an ISO 9001-certified quality management system, with manufacturing practices aligned with IATF 16949 standards. The company's commitment to quality is reflected in its roster of long-term OEM customers, including KIA, BYD, Toyota, Honda, Suzuki, and Geely — a testament to consistent delivery and rigorous process control.

For every project, the quality process begins at the design stage. Dian's team of 35 die designers and technicians uses advanced CAD/CAM software to optimize die geometry, ensure proper material flow, and minimize tryout iterations. On the production floor, dimensional verification is performed using Coordinate Measuring Machines (CMM), and critical geometric features are validated through purpose-built checking fixture systems — ensuring every stamped part meets the customer's print specifications before it leaves the factory.

Customization is available from 2D drawings, 3D data, or physical samples. Prototype services are available for new program development, and free metal samples can be provided (freight paid by the customer) for evaluation.

Factory-Direct Pricing with Global Delivery

One of Dian Stamping's most compelling advantages is its direct factory model. As a manufacturer rather than a trading company, Dian eliminates intermediary markups and offers competitive pricing without compromising quality. The company exports to more than 10 countries and has established a logistics network capable of reliable global delivery.

Typical lead times are 30–40 days for steel stamping dies and approximately 70 days for casting stamping dies, depending on project complexity. The company's automotive stamping dies are engineered for high-volume production, with durability designed to withstand millions of cycles without significant wear.

A Long-Term Partner for Your Next Vehicle Program

Whether you are launching a new electric vehicle platform, optimizing an existing production line, or sourcing high-volume stamped components for Tier-1 delivery, Dian Stamping offers the engineering depth, manufacturing scale, and cost structure to support your program from prototype to mass production.

With over 20 years of continuous operation, a 50,000-square-meter facility, a dedicated team of 35 die engineers, and quality systems trusted by global automotive brands, Dian Stamping is more than a supplier — it is a manufacturing partner built for the long term.