Koj tus txhais yog Yuezheng mus tau noj ntau hauv lawm tias cov lwm qab li cas ua si. Yog rau, cas li cas yuav tsum ntawd peb! PE LIS PP yog cov lwm cas ib tug xyoo yeej peb ua tau. Lis, koj mus kawg tuaj los yog ob cas li cas yog muaj lub tsis npawb los yog ob cas li cas yog muaj tas? Yog rau, koj mus kawg tuaj los yog ob cas li cas yog muaj tas?
PE yog polyethylene. Yog yog cov cas li cas yuav hloov thiab uas peb ua li cas bag, cas food wrap thiab squeeze bottles. (Rau hauv yog koj thiaj, PE yog polyethylene — nyob hauv cov cas bag koj mus tau hauv grocery store!) Yog yog cas li cas yuav hloov thiab uas muaj ntsib. Nws yog: PE yog ua hauv cas li cas yuav hloov thiab uas muaj ntsib.
PP yooj hwm polypropylene. Lub plastik nev yog tsis muaj ntawm PE. Nws yog ib tug npawb peb nyob rau hauv vehicle components, storage containers thiaj, thiab toys thiaj. Nej yuav tsum pom pom rau hauv food containers thiab bottle caps. PP nyob rau hauv lub cov tsis muaj reheatings resistances ntawm PE, nws yog ib tug qhov no yog tias nws muaj qab ntawm heat.
Nws thaum nws, pom pom rau hauv ib tug peak pab rau hauv plastics! PE nyob rau hauv ib tug chain tails ntawm carbon bilion thiab long. PP nyob rau hauv ib tug carbon chains tshaj thiab short. Yog lawv tias PP yog sturdier thiab ntawm heat resistant. PE yog ib tug rope long thiab stretchy thiab PP yog ib tug rope thick thiab strong.
Kuv tias cov neeg yog tau noj rau hais tawm mus peb tsis txhob ntawv PE thiab PP. Mus tom pav xav nrog qhov kev kawg? Koj tuaj PE! Mus tom pav xav nrog qhov tus neeg ua sib xaiv los yog hais tawm? Koj tuaj PP! Yog li cas nyob rau hais tawm mus yuav tsum tej kom lub tsheb.
Cov neeg tshwm kho siab lwm ntau lub tebchaws los yog hais tawm muaj qab ntsi ntawm ib tug peb tsis txhob ntawv. Pej yog muaj ntawv tsis txhob ntawv los yog hais tawm ua sib xaiv ntawm lub npawb! Lub ntawv tsis txhob ntawv los yog hais tawm qhia ntawm nrog hauv cai xyoo? Yog li cas li!
Nyob yog Yuezheng, thiab peb yog pog ob hais tawm ua sib xaiv ntawm lub ntawv tsis txhob ntawv los yog hais tawm tau nrog cov neeg nqi. Peb ua hauv lawv los yog hais tawm tau nrog cov neeg ua sib xaiv thiab ua sib xaiv ntawm lub ntawv tsis txhob ntawv. Nyob tom pav xav nrog tej kom tej kom tej kom tej kom tej kom tej kom tej kom tej kom tej kom tej kom tej kom.
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