N'izu a, ụlọ ọrụ ahụ nwetara ndị ahịa si Bahrain, South Korea na India, yana asambodo ụlọ ọrụ ISO9001 nke afọ a.Kemgbe Mọnde, ndị ahịa na ndị nkuzi nyocha na-abịara ụlọ ọrụ otu otu.Izu a na-arụsi ọrụ ike na obi ụtọ. Ihe: 20MnG,15CrMo, 15CrMoG, 35CrMo, 42CrMo,12Cr2MoG, 12Cr1MoV, 12Cr1MoVG,SA213 T11, SA213 T12, SA213 T22, SA213 T23, SA213 T91, SA213 T92, 15Mo3,P11, P12, P22, T91,P91, 42CrMoA335P11.