DB Auto Door Control Technology (Beijing) Co., Ltd was founded in 1993. The former DB is the first revolving door manufacture in China. We are always focus on revolving door access solutions design and manufacture. In 2014 we have built a products museum in Chaoyang Area, Beijing. Few past years we have done some revolving door project in Russia and Dubai, right now, we are more focus on International Market. Welcome to contact us for technical and price support.