... 4.Professional manufacturer. About the RFQ:Precision machining service of zhongtian ItemMachining service Material standardDIN ,ASTM, JIS, BS,NF,GB ... . Production equipmentInstrument lathe , cnc lathe machine, CNC milling machine , Milling machine , Grinding machine , Tapping machine , threading rolling machine ,Drilling machine,Stamping machine and etc.Inspection equipment Profile projector ...