... High efficiency flat plate solar collectorFlat-plate collectors are the most common solar collectors for use in solar water-heating systems ... long life span.2. Advantages of JB flat plate solar collector(1)Blue titanium coating, with high absorptivity 93 ... 4)Integrated frame design, nice outlook, stable structure, easy to install;(5)Integrated polyurethane foaming, thicken back and side insulation, ...