Mukugadzirwa kwezvipikiri zvewallwall, zvakakosha kuti uende kuburikidza nematanho akawanda, kusanganisira kugadzirira zvinhu, musoro unotonhora uye shinda, pre-treatment, kupisa kupisa, quenching treatment, tempering treatment, galvanizing uye kurongedza, nezvimwewo 1. Material kugadzirira The main...
Verenga zvimwe