Based in South Lancaster, Mass., Sterling Manufacturing Company Inc. is a custom injection molder. Since its inception in 1968, the company has become a worldwide supplier of custom precision-molded thermoplastic components. With 24 injection molding machines ranging from 28 ton to 550 ton, automated robotics and IQMS Realtime Monitoring System, Sterling Manufacturing Company Inc. is capable of meeting a wide range of customer needs. It offers many secondary operations, such as pad printing, ultra-sonic welding, ultra-sonic insertion, assembly, bar coding, packaging and many more. The company manufactures products for medical field, electronics, fire detection, aviation and optical devices industries. Sterling Manufacturing Company Inc. is an Underwriters Laboratories (UL) listed molder.