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1. polypropylene filter bag made of polypropylene fiber, wear resistance is next only to the polyamide fiber; good corrosion resistance, especially it is on the inorganic acid, alkali stability is good; not moldy, no rot, not afraid of insects and so on. used in flue gas temperature under 100 ℃ and acid, alkalinity higher occasions.
2. good wear resistance, resistance to normal temperature corrosion, hydrolysis resistance.
