Cov yeeb nkab hlau yog siv rau kev xa cov kua thiab cov hmoov khov, pauv cua sov, tsim cov khoom siv tshuab thiab cov thawv, nws yog cov khoom siv txuag tau nyiaj. Cov qauv tsim hlau nrog cov hlau truss, ncej thiab kev txhawb nqa tshuab, tuaj yeem txo qhov hnyav, txuag tau 20 ~ 40% hlau, thiab tuaj yeem ua tiav kev tsim kho tshuab nrog lub Hoobkas tsim cov yeeb nkab hlau. Lub choj txoj kev loj tsis tsuas yog tuaj yeem txuag hlau, yooj yim kev tsim kho, thiab tuaj yeem txo qhov chaw coated, txuag kev nqis peev thiab kev saib xyuas.
Lub sijhawm tshaj tawm: Lub Rau Hli-02-2017
