Raws li daim ntawv thov, nws muab faib ua welded yeeb nkab, galvanized welded yeeb nkab, oxygen tshuab welded yeeb nkab, hlau casing, metric welded yeeb nkab, idler yeeb nkab, tob zoo twj tso kua mis, tsheb yeeb nkab, transformer yeeb nkab, hluav taws xob vuam nyias-walled yeeb nkab, hluav taws xob vuam tshwj xeeb-puab yeeb nkab thiab kauv welded yeeb nkab.
