... have try our best for a long to control the cost to made this led bulb still with good quality, TUV ... , GSG,CE, ROHS certified, OEM factory bulb. How to control the cost?1. By the support of LED sources factory, our ... LED, the same quality at the market, but the lowest cost conpare with others. Specification:Model No.: SZ-BE2705W1. Bulb Shape ...