... membrane, especially suitable to treat the normal groundwater, reuse water with higher chemical adding system. Even if the practical input ... system produced by most leading manufactory such as: Dow. Filmtec , GE , Hydranautics , TORAY, etc. 4, Operation Instruction CP118 is corrosive ... software to calculate the input ratio according to the practical water situation.Freezing point of CP118: <0°C 5, ...