We began producing electrical porcelain insulators for high-voltage transmission and distribution power lines in 1949. We conformed to the ANSI standards of 52, 53, 54, 55, 56, 57, and TR series. In 1985, we established Precision Technical Ceramic Parts to offer state of the art ceramic parts, and we have enjoyed tremendous expansion ever since.Now headquartered in Los Angeles, California, we have established business relationships with some of the world&＃39;s largest ceramic and industrial factories in over 22 countries. In 2008, China Master (USA) Enterprise became a wholly owned subsidiary of Master & Master LLC. We continue to offer the same product innovation, advanced design, and unparalleled customer service to factories world wide.All of our industrial ceramic parts are produced in our factory, located in Wuxi, (suburb of Shanghai, China). We have a expanding team of of 250 plus factory workers, 23 engineers, and 12 machinists. Twenty-three plus years of practical field knowledge and the experience of producing hundreds of detailed technical drawings have enabled us to successfully develop our unique system to meet international industry standards and challenges. We have successfully competed with some of the largest factories in the world. Our philosophy is simple: To provide the best quality, best price, and best service.