Bekeng ena, k'hamphani e amohetse bareki ba tsoang Bahrain, Korea Boroa le India, hammoho le setifikeiti sa ISO9001 sa k'hamphani selemong sena. Ho tloha ka Mantaha, bareki le matichere a tlhahlobo ba tlile k'hamphaning ka bonngoe. Beke ena e maphathaphathe ebile e thabile. Thepa: 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, 42CrMo，A335P11.