Guangzhou Netech Environmental Technology Co.,Ltd.which specialized in ozone/oxygen machine and spare parts, used for water treatment ,air purifier and aquaculture.We are professional supplier of ozone and oxygen machine, have been done these business for more than 10 years,owning our own factory,with ISO/CE certification and Domestic patent certification,earning high reputation and feedback among our cliens.Our company website: http://www.ozonegeneratorsupplier.com/Wendy HeMail:sales04 at gznetech dot comWhatsapp/Cell:0086 13826080743Skype:netech008