Ubufakazi bokuqhuma kwe-Shenhai
I-U.S. I-Ejensi Yokuvikela Imvelo (EPA) njengamanje wenza uphenyo mayelana nokuhlobana phakathi kwe-butadiene nomdlavuza.
Ukwengeza, i-EPA yenze uhlelo olusalungiswa lokulawula ukusakazeka kwe-benzene, ikhonjwe njenge-carcinogen. The agency asserts that substantial data exist demonstrating that butadiene, along with its synthetic rubber manufacturing process, significantly endangers human health.