... efficiency,competitive price 4.Low lumen attenuation led crystalDescriptionSize:led crystalDescriptionSize:Φ37X106(mm)Power:3W DimmableLumen flux: ... years. In 2009, we developed crystal lamps, copper pendant lamps, and LED lighting. Our patented products feature 360-degree ... years. In 2009, we developed crystal lamps, copper pendant lamps, and LED lighting. Our patented products feature 360-degree ...