... of protection. Lead a filter is the second pollution buster, is a reliable impurities filter device.Household type profiteer ... out for the growth of bacteria, on the one hand, to provide a hotbed, on the ... by metal or perforation, profiteer filtration precision 5-100 microns, the naked eye can filter the impurities ... , precision control of failure, to the user, which in some losses, sum up the have the ...