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     Beijing RuiKai has been cooperating with the Bergquist Company which is the world leader in thermal management materials for years. Now, we have developed several kinds of cost-effective Aluminum base copper-clad laminates especially for high power LED. They are LED-0602, Power-LED. These products not only have great thermal performance but also have excellent dielectric performance; all their breakdown voltages are above 5.0KVAC.