Inquiry (采购产品): Suitable filter medium enquiry I was wondering if you could suggest suitable filter media material for gaseous hydrogen fluoride. **** Hidden Message ***** Richard Tipton Trinity Street Oldbury West MidlandsB69 4LN GBR Company: Thermphos UK Title: Mr E-mail: richard.tipton@thermphos.com **** Hidden Message ***** richard.tipton@thermphos.com