sleeve -process per PUNCH,MISUMI standards -or as supplied drawings -high precision and strong hardness -for mold,die sleeveprocessed by Dalian Guoyu Precision Machinery Co.,Ltd. Products standard and customized punches, guide pins, guide bushings, ejector pins,piercing punches,ejector sleeves, die inserts,carbide pins,sprue pushing,locking blocksdie casting part,mould componentsprecision mould ...