... :ISO9001-2008 97/23EC Yueqing lianggong Machinery FactoryCasting ProcessPrecision casting,Investment casting,Sand casting,Silica sol castingCasting MaterialStainless steel,Alloy steel,Carbon steel,Aluminum ... boby,Pump cover,Guide vane,Valve boby,ProcessingHeat treament,Polishing,Sand blasting,Painting, Electrolysis InspectionEquipments Spectrum analysis instrument,Metallurgical analysis,Tensile ...