after five years of research and development of the exhibition box retraction anti pinch two wing revolving door, this functional product has obtained the national patent authorization, passed the german rhine tuv company's safety certification.
three wing automatic folding revolving door product has been authorized by the national patent (patent no. zl 2016 1 0952344.1). the door leaf has the function of folding anti-collision person, realizing the stability of three wing door products...