K-SUN can researching, developing and producing Special-shaped curved surface Flat solar water heater, LED solar light, solar panel, solar power system and other related products. These products have lots of advantages with high efficiency, energy saving, low-carbon, environmental protection, long lifetime and humanization, etc.Especially our Special-shaped curved surface Flat solar water heater, the anti-freezing temperature can arrive to -60C which solved the problems of frangibility, water leakage and frost crack of traditional glass tubes, as well as the difficulty in anti-freezing of ordinary solar heaters. Besides, without any limited for installation, have full installation integration between the products and buildings&＃39; every floor. Also with high heat efficiency based on more enlarged effective daylight areas.