Ntev npaum li cas nws yuav siv sij hawm rau Asphalt Paving ua tsis-toxic

feem ntau, txheej txheem spans nyob ib ncig ntawm 20 Hnub. Petroleum asphalt feem ntau exhibits low toxicity, Feem ntau emitting aromatic hydrocarbons. Conversely, thee tar asphalt, nplua nuj hauv benzene hais txog neeg tsis mloog hais, Notably ntau toxic.

Thaum tej yam khoom no inherently toxicly toxic, Qhov teeb meem loj thaum lub sij hawm no feem ntau tsim nyog los manifest toxic teebmeem.