Qingdao Shuangzi Precision Machinery Co.,Ltd is situated in the center of Qingdao and enjoys remarkably convenient sea, land and air transportation, really an ideal place for domestic and foreign friends to make investment, cooperation and tourism. QSPM founded in 1997, QSPM is an independent entity and is eligible for import and export business. QSPM is a specialized company mainly engaged in the export of complete plants, in the contracting of engineering projects overseas and at home as well ...