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At present, we have made cooperation with the largest chip factory in Taiwan. They specialized to develop a high-luminance Warm White LED for our LED Bulbs. By the all-around testing, the luminance of the finished products can reach more than 50LM/W at the 350mA working current. We seriously promise you that if you buy our new hi-power products and find the lumens lower than 40LM/W, we will withdraw the products for you! |