Chia-yi Chen

3 Patents

• US123507942025

  Driving Head-changeable Tool

  YUAN LI HSING INDUSTRIAL CO., Ltd.

  0 cites
• USD10031322023

  Wrench

  YUAN LI HSING INDUSTRIAL CO., Ltd.

  0 cites
• US116850262023

  Tool Joint

  YUAN LI HSING INDUSTRIAL CO., Ltd.

  0 cites