The fluoroplastics alloy is the most outstanding corrosion-resistant material,the FSB and FSB-D series pump use this material, featuring the specially strong corrosive-resistance ability, and do not wear out, there is no toxin to resolve, can transport sour,lye,oxidant and other corrosive medium,extensively used in the fields such as chemical industry, petroleum,pharmacy,agriculture chemical,smelting,dyestuffs, papermaking,electroplating, food, etc.