DEZHOU ZHENGYU PRECISION MACHINERY CO,. LTD.main products are collet series, CNC tool holders, sharpening collets, taper,shank arbor,all kinds of core clamper,precision vises and so on.Our products have excellent quality and complete specification and are trust deep by users at home and abroad,.Besides we have a perfect logistics distribution system and the traffic.The products are sell well in the United States, Germany, France, Britain, Canada, southeast Asia, etc