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Chongqing Sino-NSH Used Oil purification & regeneration Manufacture Co., Ltd is a high-tech Company which is engaged in researching, developing and manufacturing lubrication purification equipment. NSH is committed in making filter equipments. NSH passed the approval of the ISO 9001 quality system and become the main manufacture base of purification machine in China. NSH oil purifier series are extensively used in the fields of electric power, petroleum, natural gas, mechanical manufacture,[...]