Minglie Ranked F flat membrane for pharmaceutical chemical has two series of purpose which are liquid and functional, and with three production series which are ZF, TF and QF. PTFE and PVDF are the main materials, and the reinforcement material is PET or PP. Among them, ZF and TF are liquid membranes, and QF is a functional hydrophobic and oil phobic membrane. The pore size of ZF and TF is from 0.1 to 1μm, and QF is from 0.03 to 30μm. This is similar to normal distribution, and has clear specification. The practice of four-balance theory, three-related principle and double cooperation effect make the membrane having specific hole geometry; modified membrane assures uniform, equality, permanent modification to all holes on the surface of the membrane by chemical method. The performance indicators such as functional group distribution in membrane surface, configuration of chain segment space, micro interface morphology, electrical properties and ionic strength is controllable and stable by functional groups, reaction activity, molecular assembly structure and the design of bonding mode of substrate film. Among them, ZF and TF have many characteristics such as huge surface hole numbers, uniform pore size distribution, specially stable membrane pore structure and surface treatment technology, economical water flow energy consumption ratio, excellent environmental tolerance, and good after-processing. Oil level of QF series can be achieved in accordance with the requirements of AATCC118 in 6 ~ 8 degrees. Width of the membrane is 520mm. Packaging unit is 1 volume/box or 6 Volumes/box. The product specification implements the open product standards of Minglie, but also undertakes special processing business.