Valve wani sashi ne na sarrafawa a cikin tsarin sufuri na bututu, wanda za'a iya amfani dashi don sarrafa kwararar iska, ruwa, tururi, kafofin watsa labaru daban-daban masu lalata, laka, mai, ƙarfe na ruwa da rediyoaktif. A cikin masana'antar harhada magunguna, amfani da bawuloli ya fi girma. Misali, a cikin masana'antar harhada magunguna ...
Kara karantawa