- Using Litree PVC alloy capillary ultrafiltration membrane technology, the filtration accuracy can reach 0.01 microns, and the molecular weight cut-off can reach more than 50,000 Daltons, which can effectively filter out suspended particles, colloids, bacteria, viruses, microorganisms and other impurities in the water, and the quality of the effluent water reaches the national standard " Standards for drinking water quality" (GB5749-2006)