Huizhou Tongsi Industrial Co., Ltd.

Advanced Technology & Patented Innovations
Tongsi Industrial, founded in 2006, specializes in high-performance connectivity solutions for power modules, encompassing spacer, clip, press-fit pin, and holder technologies. We own proprietary designs tailored for automotive HPD modules and industrial IGBT applications, and we are committed to driving innovation: 4 new patents are planned for 2025, with our total patent portfolio set to exceed 40 by 2026. Our R&D team excels in structural design, thermal-electric simulation, and reliability validation for mass production.

Trusted by Global Industry Leaders
Our components are integral to the supply chains of top-tier international brands like ROHM, Bosch, and Eaton, as well as leading Chinese manufacturers such as BYD, United Semiconductor (UNT), NIO, and Shanghai Haimuxico. We serve 80% of China's top new energy brands, with IGBT-related projects accounting for 68% of our technical solutions.

Rigorous Quality & Certification Standards
Certified with IATF 16949:2016, ISO 9001:2015, ISO 14001, and ISO 45001, we implement strict quality control using advanced inspection equipment, including 3D measurement systems, Vickers hardness testers, and CCD-based optical inspection. Every unit undergoes 100% performance testing to ensure reliability.

End-to-End Technical Support & Localization
We offer comprehensive solutions from module design and thermal simulation to mass production validation, helping clients reduce costs and improve efficiency. As a key player in power module connectivity, we support over 200 semiconductor industry partners with a market share exceeding 60% in critical segments.

Scalable Production & Agile Delivery
With manufacturing bases in the Yangtze River Delta and Pearl River Delta regions operating at over 90% capacity utilization, we provide flexible order fulfillment starting from 10,000 units, with lead times typically between 15 and 30 days. Our efficient logistics ensure timely global distribution.

Global Expansion & Data-Driven Innovation
Expanding into the EU, the US, Japan, and Korea, we aim to increase overseas revenue to 25% by 2027. Our proprietary industry database enables precise material and process optimization, while our closed-loop "simulation,  production, feedback" system accelerates R&D. We pioneered mass production of ultrasonic-welded pins in China, reinforcing our leadership in next-gen power module solutions.