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Raws li ib qho tseem ceeb ntawm cov khoom siv PVC uas yooj ywm, cov yas ua kom muaj kev cuam tshuam loj rau kev ua haujlwm ntawm cov khoom siv PVC uas yooj ywm. Yog tias cov khoom siv PVC mos (PVC txias cia qhov rooj ntaub thaiv qhov rooj) yuav tsum tau siv rau qhov kub qis, cov yas ua kom muaj kev tiv thaiv kub zoo yuav tsum tau xaiv.
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Tej zaum ib txhia neeg yuav nug tias DOP yog dab tsi thiab DOTP yog dab tsi. Puas muaj qhov sib txawv? Lawv cov txiaj ntsig thiab qhov tsis zoo ntawm lawv yog dab tsi? Cia Huisu Qinye qhia koj tias DOP thiab DOTP yog dab tsi. Tsis tas li ntawd, peb yuav ua rau koj paub zoo dua txog qhov sib txawv ntawm DOP thiab DOTP. Dioctyl phthalate yog hu ua dioctyl ester