... years in this fields, Provide OEM MAXSUN - MZFB SPECIFICATIONS:Solar collector tube: 47*1500mm, 58*1800mm, 58*2100mm, AL-N-AL ... armor plate / Color steel Layer for heat preservation: polyurethane foamed Support material: Galvanized sheet with metal baking varnish Angle of support: <45 ... *12*12188*34.5*17.5*31.046604023.1123.1235264 heat pipe collector water heater