... factory---Shengda Industry Co., Ltd is a professional manufacturer of aluminum and bimetal radiators. We are in this field from 2007 ... many years experience, now we have kinds of models, like aluminum 80x500, 100x500, and bimetal 80x350, 80x500, etc, which are ... a nice day!Regards,AmyJinyun Shengda Industry Co., Ltd.CERTIFICATIONS: Aluminum radiator die cast radiator best water heater 600/85