Haining Xianke New Material Technology Co., Ltd.is a solar collectors manufacturer,company main produces solar energy,solar water heater,solar collector....Solar collector is defined as:absorption of solar radiation and the heat transfer device to the heat transfer medium. 
This definition was included just a wealth of meaning.
First:solar collector is a device.
Second:solar collectors to absorb solar radiation.
Third:solar energy collectors can generate heat.
Fourth:Solar collectors can be passed to the heat transfer medium heat.