How to take-all LED?
Date:2011-05-26 15:25
Status:Be resolved
Question:admin
substrate and the United States, the companys silicon carbide lining end. The two companies have monopolized almost all substrate materials market, and created a complex patent system, to the desire for outsiders to enter set up technical barriers. In addition, only from Russia, Ukraine and other countries involved in several enterprises sapphire substrate material. In China, although a small number of companies prepared to invest into the sapphire substrate area, but is still in its early stag
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