Puas yog PVC zaj duab xis zoo dua li cov yeeb yaj kiab dog dig?
Cov lus teb yog.
Feem ntau, zaj duab xis yog ncaj qha rau saum npoo ntawm phaj nrog kua nplaum raws li qhov kub thiab txias. Qhov kev ua haujlwm zoo li no yog ceev nrawm, tab sis tom qab ib lossis ob xyoos, zaj duab xis yog ib qho yooj yim kom poob. PVC zaj duab xis yog qhov txawv, nws yog qhov tshwj xeeb nqus xovxwm txuas rau saum npoo ntawm lub phaj thaum kub kub, yog li nws tsis yooj yim kom poob tawm. PVC yog kiag li tsis muaj tshuaj lom thiab tasteless, uas tsis muaj qhov kev xav ntawm tib neeg daim tawv nqaij lossis kab mob ua pa. Rau cov neeg uas ua xua ntawm ntoo thiab xim, rooj tog zaum lossis chav ua mov ntim nrog PVC zaj duab xis yog qhov tsim nyog heev.
