In today's automotive supply chain, complexity is the enemy of speed. Every additional hand-off between die maker, stamper, welder, and inspection specialist adds weeks to lead times and opens the door to tolerance stack-ups, communication gaps, and quality variability. That is why more OEMs and Tier-1 suppliers are consolidating their supply base around partners who can deliver automotive stamping dies, production stamping, welding, and inspection under one roof.
LINHAI DIAN MOULD CO., LTD., operating internationally as DIAN Stamping, has been providing exactly this kind of integrated manufacturing solution since 2003. Based in Huangyan, Taizhou, Zhejiang Province — a region widely recognized as a hub for precision tooling — the company has grown from a dedicated die shop into a full-service production partner spanning four core capabilities: stamping dies, sheet metal parts, checking fixtures, and welding jigs.
A Facility Built for Scale and Precision
DIAN's current facility covers approximately 50,000 m², with a dedicated die workshop of 4,000 m². The company operates an annual capacity of roughly 2,000 sets of medium and small stamping dies and reports an annual die turnover of approximately RMB 50 million. A new 35,000 m² facility currently under development will add advanced press lines and coating capabilities, significantly expanding throughput for high-volume production programs.
The workforce includes approximately 110 employees, among them roughly 35 die designers and technicians proficient in CAD, SolidWorks, and CATIA — ensuring that every tool is engineered for optimal die structure, material utilization, and production efficiency.
| Capability | Detail |
|---|---|
| Facility Size | ~50,000 m² (current); 35,000 m² (new plant under development) |
| Annual Die Capacity | ~2,000 sets of medium & small stamping dies |
| Annual Die Turnover | ~RMB 50 million |
| Workforce | ~110 employees, including 35 die designers & technicians |
| Materials Processed | Multiphase steel, aluminum, custom rolled & welded plate, stainless steel |
| Quality System | ISO 9001 certified; IATF 16949-oriented practices |
Four Core Competencies Under One Roof
What sets DIAN apart from specialised die shops is its end-to-end manufacturing footprint. Rather than requiring customers to coordinate separate suppliers for tooling, production, and quality control, DIAN offers four integrated capabilities:
1. Stamping Dies — Precision Tooling for Complex Parts
DIAN designs and builds sheet metal stamping dies in progressive, transfer, and tandem/multi-station configurations. These tools serve a wide range of automotive applications, including body-in-white panels, door systems, seating components, instrument-panel structures, fuel-tank and exhaust-system parts, clutch systems, and chassis components. The tooling team works from 2D drawings, 3D data, or physical samples, with typical lead times of 30–40 days for steel stamping dies and approximately 70 days for casting dies.
2. Sheet Metal Parts — Production Stamping, Welding & Assembly
Beyond die making, DIAN operates full production stamping lines that produce stamped sheet-metal components for both automotive and household-appliance customers. Secondary operations — including welding, laser cutting, bending, and assembly — are all performed in-house, ensuring that parts arrive at the customer's facility ready for integration. The company also offers prototype services, enabling customers to validate designs before committing to full production tooling.
3. Checking Fixtures — Precision Inspection for Zero-Defect Delivery
Every stamped part needs to be verified. DIAN manufactures high-precision checking fixture solutions designed to GD&T standards, allowing operators to quickly and reliably confirm that manufactured workpieces conform to specified dimensions. Checking fixtures are especially valuable for complex geometries that are difficult to inspect with conventional calipers or micrometers, and they eliminate individual measurement variability across shifts and inspectors.
4. Welding Jigs — Repeatable, Accurate Assembly Positioning
Accurate welding starts with precise positioning. DIAN's custom welding jig solutions ensure that assemblies are held in exact alignment during the welding process, delivering consistent, repeatable results across production runs. Whether for spot welding, MIG/TIG welding, or robotic welding cells, DIAN's welding fixtures support both manual and automated environments.
Proven Track Record with Global OEMs
DIAN's customer roster includes some of the world's most demanding automotive brands: KIA, BYD, Toyota, Honda, Suzuki, and Geely. The company exports to more than 10 countries, serving OEMs and Tier suppliers who require consistent quality, competitive factory pricing, and long-term supply relationships.
"We position ourselves as a factory — not a trading company — which means our customers get direct access to the engineers who design their tools and the production teams who run their parts. That transparency and accountability is what builds trust over multi-year programs."
Quality Systems and Certifications
DIAN operates under an ISO 9001-certified quality management system and follows manufacturing practices aligned with IATF 16949 standards — the global benchmark for automotive-sector quality. This commitment to quality is embedded throughout the production process: from in-line dimensional checks during die tryout to final inspection of stamped parts using CMM and 3D scanning equipment.
Why Vertical Integration Matters for Your Supply Chain
When die design, tool fabrication, production stamping, and quality inspection are managed by a single partner, the benefits cascade:
- Shorter lead times — no back-and-forth between separate die shops and stamping houses
- Lower total cost — eliminate intermediary margins and reduce logistics complexity
- Better quality — die makers understand production requirements firsthand, and checking fixtures are designed alongside the tooling
- Simplified communication — one engineering team, one quality system, one point of contact
- Faster problem resolution — when an issue arises, the team that built the die can adjust it immediately
Ready to streamline your stamping supply chain? DIAN Stamping is accepting new project inquiries for custom stamping dies, production sheet-metal parts, checking fixtures, and welding jigs. Contact the team at rita@xuhuimould.com or call +86 13325865358 to discuss your next program.
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