DL series multi-layer filter DL series multi-layer filter1, This machine fits to distill, sterilize, ... .3, The sterilization part is made up of nine layer of filter board, with large filter area, big flow ... and fine filter) on the liquid, and the layer of filter board can be added or reduced according ... films, so to reduce the cost and save energy.5, The fitting of this machine is stainless steel ...