... foreign advanced technology,according to FDA and GMP standard manufacture,filter apparatus quality for import stainless steel while being hign-quality ... small,light,easy to use,filters the area it is big,the stopping up rate is low,filter the fast,pollution-free ... have polytetrafluoroethylene(PTFE),polysulfone,nylon,polypropylene,acetic acid fibre 4.Filter hole have0.1UM,0.22UM,0.45UM,1UM,3UM,5UM ...