PET (polyethylene terephthalate) yog cov khoom siv dav siv los ua cov khoom ua ntej thiab lub raj mis rau ntau yam kev siv, xws li dej haus, zaub mov, tshuaj pleev ib ce, tshuaj, thiab khoom siv hauv tsev. PET muaj ntau yam zoo, xws li pob tshab, lub zog, rov ua dua tshiab, thiab cov khoom thaiv....
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