... foreign advanced technology,according to FDA and GMP standard manufacture,filter apparatus quality for import stainless steel while being hign- ... polytetrafluoroethylene(PTFE),polysulfone,nylon,polypropylene,acetic acid fibre 4.Filter hole have0.1UM,0.22UM,0.45UM,1UM,3UM, ... 30UM,60UM,divide and dredge swim-ming skill(suitable for gas)attempt to cement relations with rulers of minority nationalities ...