Inquiry (采购产品): Light-proof ventilator I need a ceiling light-proof ventilator for a room I am converting to a photographic darkroom. Please send me info about your offerings. Thanks in advance. Wayne Wilmot **** Hidden Message ***** Wayne Wilmot 20871 Company: Wilmot Env. Tech. E-mail: wilmot@wets.com **** Hidden Message ***** wilmot@wets.com
