Hauv peb lub neej, CPE thiab PVC tau siv ntau thiab ntau dua. Chlorinated polyethylene yog cov khoom siv saturated polymer nrog cov hmoov dawb zoo li, tsis muaj tshuaj lom thiab tsis qab, thiab muaj huab cua tsis zoo, ozone kuj, tshuaj tiv thaiv thiab kev laus. Rau...
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