... main field is WATER FILTER ELEMENTS, all the products meet International specifications. KING BRIGHT CO. has producted water filter cartridges by ourselves, ... we have PP sediment filter, PP sediment string wound filter, Pleated filter production line, carbon ... -114mmID (Inner Dia): 28, 30mmL(Length): 5,10,20,30,40,50 inchesMicron Rate: 0.5,1,5,10 ...