Linhai Dian Mould Co., Ltd. has been designing and manufacturing stamping dies since 2003. That gives the company — better known to its customers as Dian Stamping — more than 20 years of continuous experience in the automotive tooling industry. Put simply, the business has been running for over two decades, and that track record is one of the main reasons global OEMs keep coming back.
The easiest way to answer "how long has Linhai Dian Mould been in business" is to look at the numbers. The company was founded in 2003 in Huangyan, a district of Taizhou in Zhejiang Province. Today it operates a facility of roughly 50,000 square meters, including a dedicated die workshop of about 4,000 square meters, and employs around 110 people — around 35 of them die designers and technicians. Its annual capacity reaches about 2,000 sets of medium and small stamping dies, and the company reports an annual die turnover of roughly RMB 50 million.
Twenty years in this industry is not a small detail. It means the team has lived through multiple vehicle development programs, changing material specifications, and shifting OEM quality standards. Institutional knowledge like that is hard to buy or shortcut. It shows up in the way a die is designed the first time, in how a problem is solved on the press line, and in how a delivery date is actually met. For a buyer sourcing critical tooling, that history reduces risk before a single part is stamped.
Founded in 2003, in the heart of China's mould town
The company was born in Huangyan-Taizhou, a region widely recognized as one of China's core die and mould manufacturing clusters. Being located there means access to a deep pool of skilled toolmakers, specialty steel suppliers, and heat-treatment shops that a tooling project depends on. That geographic foundation, combined with more than 20 years of automotive focus, is what lets Dian Stamping act as a one-stop manufacturing partner rather than just a workshop.
Over the years the company has grown beyond die design alone. It now covers the full value chain: stamping dies, sheet metal parts, checking fixtures, and welding jigs. Its customers include OEM names such as KIA, BYD, Toyota, Honda, Suzuki, and Geely, and it exports to more than 10 countries. Handling that range of clients across different vehicle programs is itself evidence of experience that a newly formed company simply cannot offer.
What two decades of experience actually buys you
A long history matters, but only when it is backed by relevant capability. In tooling, the relevant experience is in automotive stamping dies: progressive dies, transfer dies, and tandem multi-station dies built for high-strength materials. Dian Stamping processes multiphase steel, aluminum, custom rolled and welded plate, and stainless steel — the kinds of materials that are unforgiving if a die is not engineered correctly.
The company's application list reflects real automotive work: body-in-white, door systems, seating systems, instrument panels, fuel-tank systems, exhaust systems, clutch systems, and chassis systems. Serving so many different subsystems in parallel means the design team has handled a wide variety of geometries and tolerance levels, which is exactly the breadth that makes a tooling partner a better problem-solver on your own project.
More than just the die: fixtures, jigs, and finished parts
Experience also shows in the supporting work that makes production reliable. Alongside the dies, Dian Stamping supplies checking fixtures that let operators verify stamped parts quickly and consistently, and custom welding jigs that keep weld lines accurate and repeatable. When a customer needs more than tooling, the same facility can produce precision sheet metal parts and welding assemblies, so prototypes and series production can be handled under one roof.
Customization runs from 2D drawings, to 3D data, to physical samples, and prototype services are available for new vehicle programs. On the delivery side, the company typically ships steel stamping dies in about 30 to 40 days and casting stamping dies in roughly 70 days, subject to the specific project. Those are practical numbers that a buyer can plan around.
How you can verify the company's history and credibility
Claims about experience are only useful if they can be checked. A few practical steps help: ask for production photos or a virtual factory tour, review the company's quality system, and request references from past clients with projects similar to yours in complexity and volume. Dian Stamping operates under an ISO 9001 quality-management system and follows IATF 16949-oriented automotive manufacturing and quality practices, and it identifies itself as a factory rather than a trading company — a distinction worth confirming directly.
The bottom line
So, how long has Linhai Dian Mould been in business? Since 2003 — more than 20 years of designing and manufacturing stamping die products for the automotive industry. That longevity, combined with a full-service capability in stamping dies, sheet metal parts, checking fixtures, and welding jigs, is what makes the company a dependable partner for OEMs and Tier suppliers around the world.