caustic soda electrolytic film ,Lon film for caustic soda, Electrolytic film , reinforced perfluorinated ion exchange membrane Reinforced perfluorinated ion ... size: We can offer special size film,if MOQ gets to 20Sqm, we won’t collect the extra charges, if ... Performance Test DataTest MethodLinear expansion2%((23°C,from 50% RH,to water soaked)ASTM756Water uptake30%±5% (100°C,1h)ASTMD570Conductivity0.1S ...