... Engineering Machinery Parts 1.Material: 304,304L, 316, 316L 2.Process: CNC machining 3.Tolerance: 0.02 Indutrial Engineering ... ,IGS, STPPreferred Industriesa) Agriculture machineb) Mining Machinec) Engineering Machined) Industrial Machinee) Mechanical Equipmentsf) Other Customized Metal ... flanges, valves parts, casting and forging parts, engineering goods, etc.5. Quality control following 3 phases ...