Compared to incandescent bulbs and although have led more energy efficient, longer life advantages, but the high price is the key constraint in popularity among consumers, the most important reason is that fluorescent lamps led tube used Rare earth elements (REEs) are used. Scientists have recently succeeded in finding alternative raw materials for rare earths and ultimately lowering the price of LED bulbs in the future. 
LumiSands, a subsidiary of the University of Washington, has successfully developed this alternative material. The LED tubes made with this material are more oriented towards natural sunlight and more cold than existing bulbs. In addition, this material is extracted from cheap and abundant sand.
LumiSands, a subsidiary of the University of Washington, has successfully developed this alternative material. The LED tubes made with this material are more oriented towards natural sunlight and more cold than existing bulbs. In addition, this material is extracted from cheap and abundant sand.
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