... pierce punches,punch die,pierce die inserts for fin die,-produced by Dalian Guoyu Precision Machinery Co., ... die, precision plastic mould,punch die, air conditioning fin die, semi-conduct encapsulation mouldProcessing materials Copper, high ... ,Cylindrical grinder,Inner-aperture grinder, CNC grinding machine,CNC milling machine, polishing machine, engine lathe, Quadratic element, Projector (imported ...