... international certification.... NSF,SGS,IAF,ISO CERTIFIEDSpun Bonded water filter cartridgeUpdated Time: 2013-3-20 1.)Brief account: ... 28--30 mm4.)Main performances: a.Precision & flow Filter precision(μm)13510203050Initial precision(μm)10-1515-2525-3530 ... 60 5.)Usagea.Electronic,electronic & power Industries: pure water, gas, electroplate liquid, presswork and so onb.Chemical & petrochemical Industries ...