• Advanced Precision Machining
  535 W Allen Ave
• Pacific Precision Inc
  425 Borrego Ct
• Delco Machining
  438 W Arrow Hwy # 4
• T & T Metals
  438 W Arrow Hwy # 14
• S & L Machine Products
  235 W Allen Ave
• Galmac Manufacturing
  565 W Covina Blvd
• Double D Precision
  571 W Covina Blvd
• 4di Industries
  4460 Brooks
• Sergio's Machine Co
  289 W Allen Ave
• Mikana Manufacturing Co Inc
  949 N Cataract Ave # C
• Dixon Precision Products Co
  613 W Covina Blvd
• Cox Tooling
  457 Borrego Ct