Ⅰ.Txheej txheem cej luam Nyob rau hauv thermal fais fab nroj tsuag, petrochemical systems, high-viscosity kua nyob rau hauv lub thee chemical kev lag luam, sib tov kua nrog plua plav thiab khoom hais, thiab cov kua corrosive heev, pob li qub yuav tsum tau siv hlau hard-sealed pob li qub, yog li xaiv tsim nyog hlau hard- kaw pob li qub.Cov...
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