filter cartridge 1.cartridge length:5'',10",20",30", 40" 2.inner dia.:28 mm,outside dia.:63 ... 10″——filter accuracy 5μm Size:1. length: 5'', 10", 20", 30", 40" 2. internal diameter: 28 mm, external diameter: 63 ... : 100% polypropylene 5. Filtering precision(um): 1 ,3, 5, 10, 20, 30 ,50 E. Application: 1. Electronic industry: Pre-filter for ...