Cov cab iav no tau siv rau hauv cab iav reducer, cov khoom siv cab iav yog Tin Bonze thiab cov ncej yog 8620 alloy hlau.Feem ntau cov cab iav tsis tuaj yeem ua kev sib tsoo, qhov tseeb ISO8 yog qhov zoo thiab cov cab cab yuav tsum tau muab tso rau hauv qhov siab zoo li ISO6-7 .Meshing test yog qhov tseem ceeb rau cov iav iav ua ntej txhua qhov kev xa khoom.