1.a strong resistance to chemical corrosion, 2.large void space and ... fluoride (PVDF).They have a strong resistance to chemical corrosion, large void space and fluid capacity, low ... drop, energy saving, low operation cost, light in weight and easy to be load and unload, and ... for stripping, absorbing and washing in low temperature of 60-150°C in the tower in chemical, petrochemical , alkali chloride, ...