Established in 2000.ZheJiang shendu optoelectronic technology co., ltd has already gained a reputation around the world. With our own tube factory , automatic equipment factory, more than 40 technlogy and quality control engineers.all kinds of checking machines and equipment as well as certificates like ce ccc gs ul cul iso9000, we can control the lamp quality in a better waay , making sure the lamps we manufacture are of long lifetime , high lumen efficiency. Our lamps and service are welcomed by many great companies both home and abroad.one example is we are the lamp supplier for the largest lighting supermarket HOME DEPOT OF USA.