... Chip of the Filters uses Hydrophobic PTFE or Folding Microporous membrane .filters body uses imported stainless steel (304.316L Product introductionChip of the Filters ... purification (as total air filters, sub-filters), distilled water cans, respirators.AXENATION filters is especially used for ... uniform stability, gas resistance, renewable convenience. Chip of the Filters can be use for 1-2 times , ...