Shenzhen Xiangnan High tech Purification Equipment Co., Ltd--- Amanufacturer for air filters, air purify equipments in ShenzhenChina since 2002.Our Product lineAir filters: filter materials, pre-filter, mudium filter ( pocketfilter, rigid medium box filter, PP PET polyester filter ), HEPAfilter,ULPA filter, Heat resistance HEPA filter, HEPA filter withgel seal, carbon filter, air purifier replacement filter,photocatalyst filter, cold catalyst filter, sea-salt filter and soon.