We are the largest laboratory glassware manufacturer and exporter in China, our laboratory glassware factory was established in 1967.  We are of the member of the National Glass Instrument Standardization Committee, till now,  we have participated in drafting and revising the Chinese National standards of glass instruments. Our products include series of microscope slides, cover glass, beakers, measuring cylinders,...

Residual Current circuit breaker  provide the function of isolation switching and earth leakage protection of electrical circuits. And it also provide the indirect protection of the operator's body against the dangerous effects of electric current and provide the protection of the fire caused by the electrical circuit fault. ...