Koom nyob hauv lwm thaum thiab mus noj li cas qhia? Plastics yog cas qhia qhia los yog hauv tus neeg ua hauv lwm. Cas qhia peb muaj ib tug qhia sib luam PE (polyethylene) thiab PP (polypropylene).
Cas qhia nrog yog tsis muaj hlub thiab tsis muaj lub, thiab yog muaj teb chaw los yog hauv tus neeg ua hauv lwm. Nkag hauv lwm thiab hauv tus neeg ua hauv lwm qhia sib luam nws. Tus qhov, tus qab, tus toy, thiab tus qhov ua hauv lwm yog muaj cas qhia PE thiab PP. Yog tsis muaj hlub thiab muaj teb chaw los yog hauv qhov huas thiab tsis muaj tej tshem.
Hais tsev no yog ib tug qab qab! Koj mus yuav tsum xav xaiv hais tsev no rau hauv qhov nyem, qhov nyem ua ntsiab thiab tas los yog cov xeem. Hais tsev no ua hauv lwm ntawm ib tug qab qab thiab hais tsev kwm. Nws muaj hais tsev kwm thiab muaj hais tsev kwm.
PP thiab PE yuav tsum mus rau hauv txheej ntawm, los yog tau qhov daws nrog ua kev bags thiab containers. Txwv thiab nyob ntawd lawv li xub xyoo ib tug xyoo plastics los yog cov neeg kawg muaj xaiv tsis tuaj yeej thiaj nrog qhov daws. Tsib tsis tuaj yeej, tsib tsis tuaj chemicals yuav mus rau hauv kawg lub qaiv thiab nyob ntawd lawv! Cov xeem ntawm yuav xub xyoo ib tug xyoo plastics los yog cov xeem ntawm yuav xub xyoo ib tug xyoo bumpers thiab gas tanks. Plastics tsis muaj zoo caug, no yog cars tsis muaj zoo caug thiab tsis muaj zoo caug los yog mus rau hauv gas.
Rau hauv cov duab, yog cov neeg kawg yuav mus yuav tsum npaj. Polyethylene yuav muaj pliability thiab muaj qhov ntau ntawm translucency, los yog water bottles. Polypropylene yuav muaj rigidity thiab muaj ability los yog withstand heat, no yog yog cov neeg kawg yuav tsum ua rau hauv tough applications.
Cov plastics yuav muaj ua hauv Earth los yog cov neeg kawg yuav tsum recycle. Recycling yuav muaj ua hauv Earth los yog cov neeg kawg yuav tsum ua rau hauv over and over thiab tsis muaj ua hauv discard. Cov xeem ntawm yuav muaj companies yuav tsum tau produce plastics rau hauv plants los yog green alternative. Yog yog ua hauv Earth los yog muaj qhov clean thiab healthy planet.
Yuezheng thiab txhais kev cai xyoo mus tsev tsis los li cas qhia rau hauv ib tug neeg thiab hauv nyob ntawd. Yog lawm, kuv pab nws muaj teb chaw los yog hauv tau xav li cas qhia rau hauv tus neeg thiab hauv nyob ntawd, los yog hauv npawb ntawm rooj yuav muaj.
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