Hot Sale Solar Water Heaters Made in China 1.Solar Water Heaters Made in China 2.Non-pressurized Type 3.3 ... SteelCertification: CE, ISO,CCCCapacity: 180Place of Origin: Shanghai China (Mainland)Brand Name: sunrise or OEMSystem: low pressure ... principle, the hot water rise up, and arrive in the water tank, the cold water inside the ... . Stand angle: 15 degree, 20 degree, 25 degree, 30 degree, 38 degree