... , light efficiency reaches 100lm/w. Compared with conventional incandescent lamp, lighting efficiency enhances 5 times, and saves 80% energy ... color of the object.This product has several categories of lamp bases, optional base: E14, E26, E27, E39, E40, B22 ... factories, workshops and supermarkets. Ideal replacement for conventional incandescent lamp.OUR SERVICE:1. Your inquiry related to our products ...