... lianggong Machinery FactoryCasting ProcessPrecision casting,Investment casting,Sand casting,Silica sol castingCasting MaterialStainless steel,Alloy ... ,Guide vane,Valve boby,ProcessingHeat treament,Polishing,Sand blasting,Painting, Electrolysis InspectionEquipments Spectrum analysis instrument,Metallurgical ... ,Dellection tester,Impact test machine,Projector,Altimeter,Scale Micrometer etc. Train accessories ...