... 4.Graceful outline Flat plate solar collector for the project High efficiency flat plate solar collectorFlat-plate collectors are ... pressure, better stagnation performance;(4) Graceful outline, well matched to the building;(5) Stable quality, free maintenance and long ... 4)Integrated frame design, nice outlook, stable structure, easy to install;(5)Integrated polyurethane foaming, thicken back and side ...