Phenolic resin tseem hu ua bakelite, tseem hu ua bakelite hmoov.Ameslikas tsis muaj xim (dawb) lossis daj-xim av pob tshab, kev lag luam feem ntau ntxiv cov tshuaj pleev xim kom pom xim liab, daj, dub, ntsuab, xim av, xiav thiab lwm yam xim, thiab nws yog granular thiab powdery.Tiv thaiv...
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