It is a non-pressurized type solar water heater separated with water tank.. It uses double-layer glass evacuated solar tubes. It is high heat efficiency and economical system especially for projection. It is designed for commercial solar water heating application. This type soalr water heater is very popular in some hot or warm areas. 1). Designed for commercial solar water heating applications 2). Reliable, efficient, twin-glass solar tubes 3). Polyurethane insulation ensures good heating performance and minimal heat loss 4). Manifold cover's material: stainless steel or galvanized sheet 5). Frame material: 1.2mm thick all stainless steel 6). Easy plug-in installation 7). Can be connected in series to increase water heating capacity Products are put into cartons firstly. The samples are loaded into the plywood boxes. For the fcl goods, cartons can be loaded into the container directly.