... can charge for the system, one time investment, long-term benefits. It can be applied to the villa, housing,outdoors,tourist ... .(can charge for Cell phones, notebook computers, lights, digital camera, camera, TV set, electric tools, music CDS, DVDS, electric power, such as ... lights, digital camera, video camera, TV, electric tools, music CD, DVD, electric power whose voltage is in 50Hz,220V, Design and ...