Xaiv 20Crmo, 42Crmo, 40CrNiMo alloy cov ntaub ntawv.Forging, machining, kev kho cua sov, txhaj tshuaj blasting, sib tsoo thiab lwm yam txheej txheem yog siv los txhim kho Abrasion tsis kam thiab cuam tshuam ntawm cov khoom, thiab ua kom cov khoom siv lub neej.