중국단조 제조 / 공급 업체,제공 품질 Metallurgical Continuous Casting Machine 2Cr13 Heat-Resistant Corrosion-Resistant Forging Ring, Elevator Traction Wheel 35# Steel Fatigue-Resistant Precision-Machined Forging Ring, Oil Drilling Derrick 4140 Alloy Steel High-Tension Anti-Deformation Forging Ring 등등.