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Cov Xov Txuas Ntxiv Phenolic thiab Urea Closures
Cov kaw uas muaj xov txuas ntxiv mus tas li yog cov hom kaw uas feem ntau siv rau kev ntim ntau yam khoom, xws li tshuaj pleev ib ce, tshuaj, thiab khoom noj. Cov kaw no paub txog lawv qhov ruaj khov, tiv taus tshuaj lom neeg, thiab muaj peev xwm kaw kom nruj kom tswj tau qhov tshiab thiab kev ua tiav ntawm cov khoom.
