Ua ntej tshaj plaws, cov khoom siv yas rov ua dua tshiab yog nyob rau hauv qeb ntawm cov khoom yas, qhov thib ob, cov khoom yas tau muab faib ua cov tshiab thiab qub, cov khoom siv tshiab, yog ib hom resin ua los ntawm polymerization ntawm monomer hauv cov nroj tsuag petrochemical siv ntau yam txheej txheem tshuaj. , thiab cov yas rov ua dua tshiab yog rov ua dua cov khoom tshiab uas tau siv los yog cov yas pov tseg uas tsim los ntawm lub tshuab screwing, thiab tom qab ntawd txiav rau hauv granules los ntawm pelletizer. Kev siv ntawm ob qho tib si muaj ntau qhov sib xws, tab sis qhov sib txawv yog tus nqi, cov neeg siv khoom xav tau thiab cov teeb meem zoo, qee cov tuam ntxhab ntawm cov khoom siv tshiab thiab cov khoom siv rov qab siv ua ke, uas tuaj yeem txo cov nqi, vim hais tias nyob rau hauv cov ntaub ntawv ntawm cov khoom siv me me, qhov no kuj yog thawj qhov kev xaiv ntawm manufacturers. Txawm li cas los xij, tsuav koj muaj thev naus laus zis zoo, cov yas rov ua dua tshiab yuav muaj cov khoom zoo sib xws rau cov ntaub ntawv tshiab.