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By certification 
Features:
1, can be stainless steel, copper, iron, aluminum and other metal materials spinning metal drums.
2, high-precision parts, surface quality, and various colors of spray paint, spray, anodizing processing.
3, significantly improved product performance, tensile strength, yield strength and hardness have improved.
4, one spinning, simply eliminating the weld discontinuities related to the intensity decreases, and the tensile stress concentration embrittlement and other ills.
