... CE, SolarKeymark,SRCC Solar Collector is a device that absorbs solar energy from the sun and converts it into usable ... heat energy. The heat is normally absorbed by water, or ... solar collectors, if you need 300L, you can use two sets of SC58-1.8-18. 400L, you can ... 500L, you can use two sets of SC58-1.8-30. We, Changzhou Erjin Solar-Energy Equipment Making Co.,Ltd, ...