... Stable performance and easy to operate pre-heated solar energy water heater Characteristic 1. Use the copper coil as ... and use. It takes the advantage of the tap water¡¯s pressure, more pressure, more comfortable. It ... so it can produce the high quality hot Water The water come from the copper coil, so it is ... 50-60mm 5. Capacity:150L,160L,200L,250L6. System with the assistant tank as the feeling tool.7 ...