Qingdao Bortome Import & Export Co., Ltd., located in Qingdao China, is the wholly-owned subsidiary of Tongyu Heavy Industry Co., Ltd (Stock Code: 300185) . Qingdao Bortome is committed to build a first-class company in the major business of Wind Tubine Main Shaft,Ductile Cast Iron Pipe Mould,Roll,Castings an forgings,cemented carbide.