Izinto ezingavuthiwe zepulasitiki yi-resin yokwenziwa, ekhishwa futhi ihlanganiswe ku-petroleum, igesi yemvelo noma ukuqhekeka kwamalahle.Uwoyela, igesi yemvelo, njll. kuchithwa kube yizinhlanganisela ze-organic-molecule ephansi (njenge-ethylene, i-propylene, i-styrene, i-ethylene, i-vinyl alcohol, njll.), kanye ne-low-molecular ...
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