TOPWIN, your Precision Machining Specialist...

Since 1992, Topwin has been producing precision machined parts for laboratory, optical, sensors, motion, medical and aviation devices as well as a wide variety of other parts with very tight tolerances. Instead of cutting corners by using second-tier machinery, Topwin adopts equipment only from top-notch makers such as Miyano and Cincom for production, as well as Schneider Messtechnik 3D multi sensor CMM for QC processes.


Over the years, Topwin became a well-regarded precision machining specialist with over 100 sets of CNC machineries like CNC Lathes, CNC Machine centres & CNC Grinders for production. To live up to ascending expectation, our production plant in Dong Guan, China is accredited with:


  • ISO 13485:2003 for medical devices parts production
  • ISO/TS 16949:2009 for automotive parts production
  • ISO 9001:2008 for quality management system
  • ISO 14001:2004 for environmental management

We are also capable of manufacturing RoHS complying products as request by our customers.


In continuing our proven excellence, we are looking forward to establish long-term, mutual beneficial partnership with even more customers with our professional attitude, edge-leading craftsmanship and quality services. We are confident that Topwin would be your best choice if you are looking for precision metal machining manufacturer with class-leading quality and professional services.