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Guangdong Yifeipurification Technology Co.,ltd is a Chian manufactures to research, design ,sales and produce air cleaning products and equipment , We have Experienced R&D team, Complete production equipment ,Skilled production worker ,9000 Square Meters factory area , include equipment production base ,and filters production workshop . our main production include: HVAC System Pre Filter/Medium Filter /HEPA Filter ,Major Brands Air purifier replacement filter ,Activated Carbon Filter, Yifei Brand Air purifier Series, Air sterilizer ,Fresh Air System, etc Air Purification Products. We already passed/get ISO 1400:2015,ISO 9001:2015,OHSAS 18001:2007 system certification, CQC certification ,KC certificaiton ,CCC certification ,CE certification and many other certifications . Our products widely applied in medical treatment , public health, household , micro-electronics ,optical fiber & cable ,bio-pharmaceuticals ,food @ beverage ,agriculture ,forestry ,animal husbandry , veterinary medicine ,inspection& quarantine ,aerospace, automobile , precision instruments ,institutions of higher , education, scientific research ane teaching, etc