ptfe can be use in the tempreture of -200c--+250c,and fep ,pfa can be use from -200c to +205c. ptfe: narrow-gob bottle,beaker,capacity bottle,pipy bottle,clear-up jar with steel layer ,crinkle-gob bottle,acentric tube,filler,pot,stiring stick. fep :narrow-gob bottle,washing bottle,dropping bottle,acentric tube,second boiled alembic,beaker. pfa :measuring cylinder,pipy bottle our household utensils can long store vitriol,nitric acid,phosphoracid,hydrofluoric acid,bromic acid and other all kinds of organically solvent (which above all are rarefied by many times) ,and the bottles won't be corroded .fluorin household utensils are all dropping resistance,and fep,pfa bottles are clear .they are used to airproof sth in the fields of smelting,petrifaction for antisepisis. for more detail,please contact us by mail market1 (at) prochema (dot) cn or market2 (at) prochema (dot) cn . tel:0086 816 2692769 fax:0086 816 2692779 web:www.prochema.cn email:market1@prochema.cn market2@prochema.cn msn messenger:zch5584@hotmail.com