Brand: Haotian film Model: HT-ppzj001 polypropylene hollow fiber membrane film process, did not vote any additives and pore-like material, which is good chemical stability. Can be acids, alkalis and chlorine disinfectant cleaning, flux recovery after a good cleaning. 3. good stain resistance, typically used in water treatment, water treatment, and also used in sewage and water treatment. PP main technical parameters: n film Material: PP polypropylene n outer diameter: 430μm n intima-media thickness: 40 ~ 50μm n membrane pore size: 0.01 ~ 0.2μm n permeability:> 7.0 × 10-2 (cm3 / cm2 · s · cmHg) n longitudinal strength: 120 MPa n Porosity: 40 ~ 50% n turbidity: <0.2NTU n temperature tolerance range: 0-50 ℃ nPH tolerance range: 2-13 n Life: 3-5 years n Maximum water pressure: 0.3MPa n maximum backwash pressure: 0.3MPa