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Nruam Xov Phenolic thiab Urea Kaw
Nruam threaded phenolic thiab urea kaw yog feem ntau siv hom kaw rau ntim ntau yam khoom, xws li tshuaj pleev ib ce, tshuaj, thiab zaub mov. Cov kaw no paub txog lawv cov kav ntev, tshuaj tiv thaiv, thiab muaj peev xwm muab kev sib khi nruj kom tswj tau qhov tshiab thiab kev ncaj ncees ntawm cov khoom.
