In general, in addition to the flashlight developed by Comrade Da Vinci, which can generate electricity using light from a flashlight, the vast majority of solar cells in the world require direct sunlight to generate electricity. Now, a Jerusalem company named GreenSun broke this restriction and developed a solar cell that can generate electricity without the sun. Of course, "there is no need for the sun" is an exaggeration. It is not black or black. But basically, the strength of GreenSun solar cells can afford this exaggeration. It has two great things: First, it is obvious that it is colored, precisely, the color of the gem, ruby, sapphire... This is due to its craftsmanship and material, less silicon, more other things (This advantage also brings an additional advantage, that is, the production cost is lower than the ordinary solar battery, simply, it is cheaper), which makes it look like candy more than the battery; Second, it does not require sunlight Direct lighting can generate electricity, as long as the entire environment is bright, where it is installed, and even in cloudy weather, it can work as usual! Flexible lift gate is a flexible soft curtain door, inside and outside the two curtains, curtains used between the aluminum beams connected with a vertically movable rail, the roof beams have levels not in the same straight line and hangar large plants in particular be applicable. Flexible lift door installation does not take up interior space in the hole inside. When the fiest move to open the door, and finally superimposed over the hole. Off event curtain rail first and then fall down until it is completely closed. Flexible Gate,Flexible Pvc Aircraft Folding Up Door,Steel Structure Fabric Flexiile Door,Exterior Automatic Flexible Door Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.hfhighspeeddoor.com