Chongqing Huaneng Hydro Power Equipment Manufacturing Co,. Ltd. It is the leading expert to design and make the on-line detachable brush holder, brush support carrier, carbon dust collector and oil mist collecting device in the filed of generators for more than 20 years. Our products have greatly and obviously helped our customers' to resolve their problems during the operation of generators, carbon dust and oil mist troubles, and also awarded by them for the excellent performance from DEC, HE, VOITH, ALSTOM,…etc.