Kauv steel yeeb nkab xav tau kev kho mob sab nrauv ntxiv kom ruaj khov: 1. Lub ntsej muag ntawm cov kav hlau tiv thaiv kab mob yog ntxuav nrog cov kuab tshuaj thiab emulsions, uas tuaj yeem tshem tawm cov organic teeb meem ntawm qhov chaw ntawm lub kauv raj, tab sis nws tsis tuaj yeem tshem tawm cov xeb, oxide nplai, vuam flux, thiab lwm yam., yog li ntxuav ...
Nyeem ntxiv