... to use avirulent and insipidity polypropyleneparticle, by heating melting and silk spray, traction, acceptingforming tubular filter, it has characteristics ... polypropylene 5. Filtering precision(um): 1 ,3, 5, 10, 20, 30 ,50 E. Application: 1. Electronic industry: Pre-filter ... , wines and fruitjuice 3. Medicine industry: Filter of drug liquid, gases 4. Chemical industry: Filter of organic solvent 5. ...