Factory Facilities & Testing Laboratories
Welcome to the TOSTA precision spring manufacturing base in Qingdao. Take an inside look at our automated production lines, testing laboratories, and quality assurance framework.
Operating over modern industrial workshops in Qingdao, TOSTA integrates multi-axis CNC wire coiling, controlled-atmosphere heat treatment, precision end-face grinding, and accredited mechanical test laboratories. From raw material spectrometer inspection to final lot dispatch, every process step is documented under ISO 9001 and IATF 16949 quality standards.
Production & Testing Capabilities
Automated Production Facility
Equipped with state-of-the-art CNC coiling machinery, continuous protective-atmosphere tempering furnaces, and automated deburring systems for high-precision volume manufacturing.
- ✓Multi-Axis CNC Coilers (0.08 mm – 10.0 mm wire range)
- ✓Continuous Mesh-Belt Stress Relief Furnaces
- ✓Automatic High-Speed Dual-End Face Grinders
- ✓Cleanroom Assembly & Clean Ultrasonic Degreasing Lines
Accredited Quality Testing Laboratory
Equipped with complete metallurgical and mechanical inspection suites testing to ISO, ASTM, DIN, and GB quality standards.
- ✓Computerized Dynamic Spring Rate Load Testers
- ✓High-Frequency Resonant Fatigue Testing Benches
- ✓Micro-Vickers & Rockwell Hardness Testers
- ✓Metallurgical Microstructure Microscopes
- ✓NSS Salt Spray Corrosion Resistance Chambers
Intelligent ERP Warehousing
Over 500+ material grades in stock and 30,000+ catalog spring items available for rapid order fulfillment.
- ✓Smart Barcode & ERP Automated Inventory Management
- ✓Complete Raw Material Heat Lot Traceability
- ✓Standard Catalog Orders Dispatched in 1–24 Hours
Schedule a Factory Audit & Technical Visit
We warmly invite domestic and international clients to tour our manufacturing floors and test laboratories to evaluate our production capacity and quality management systems firsthand.