Manufacture the high quality products strictly under the iso9001 puality system. Low operating cost, small pressure drop, strong discharge. New modular housings for flows through 37nm3/min. Adopt top quality aluminum alloy. Paint epoxy powder to add durability and corrosion resistance. Easy to install (modular connect housings can be connected easily in series and save space), Easy to maintain (new compact design reduce space for clearances) Packed in carton boxes