... Acid, Alkai & high temperature Resistant 1,Material: PVC flam-resistant static-free fabric with steel wire reinforced.2.PVC Thickness:0 ... such as tunnel, basement, ship building or welding, laboratory ,air-conditioner,engine room, the municipal conduct engineering,fire-fighting to ... ventilate or exhaust waste air,dust to supply fresh air.keep more savely and effectively during working. ...