Ningbo Siying Optoelectronic Lighting Science & Technology Co.Ltd. (Ningbo Siying Lighting Company) is a profeesional manufacturer of both LED bulbs and led diodes. As our factory is original from LED package and application with nearly ten years experience, we know very well of the character and technique of led light source, and good at adopting the most suitable led light source to reach high quality and to meet different customer's requirements. The strong capability of developing and designing new led light products enable us more competitive power. Further more, the whole and...