Cov khoom siv ntawm lub tsheb qhov rooj kov yog dab tsi?
Cov khoom no yog me ntsis zoo li txhuas, tab sis nws tsis yog txhuas, nws tsis yog sib nqus nrog cov hlau nplaum, xav tias zoo heev, qhov tseeb, nws yog yas, domestic pib ABS los yog ABS + PC, txawv teb chaws tej zaum yuav yog PA66, ib co sab nraud tes yog ntxiv rau iav fiber ntau, 6 valent chromium toxic, Tuam Tshoj tau txwv