... company:HUZHOU SONGHUA RUBBER&PLASTIC CO.,LTD,which is one of the biggest engineering plastic products manufactory in CHINA market ... bronze.It will have good heat conductivity and low heat expansion coefficient.Application:It has good corrosion-resistance, low friction and ... good hardness, it is widely used for the production of washer,valve,bearing,slide,pistonring,insulating sleeve, and self- ...