... is for factory,industry,house,school,hotel,goverment, Flat Solar Panel Water HeatingFlat panel solar water heating system: Size(LxWxH mm)2000x1000x70/80/90 ... glass/toughened glass/low-iron ultra white tempered patterned glass/4.0mmAbsorbancy≥92%Pipe port material /sizecomplete copper / Φ25x950mmPipe material/sizecomplete ...