PP Fiber Water Filter Cartridge MachineryPP spun filter cartridge is widely used in water treatment system for drinking water and industrial water , which adopts polypropylene as raw material. We are one of the largest water filter cartridge making machine manufacturers in China, including PP melt blown filter cartridge machinery / active carbon filter cartridge machinery and pp string wound filter machinery , etc For more details please Attn: ivy2087@******* WhatsApp/Mobile : +86-18251549636