In the car outline clear, concise space, the use of modern materials and processing technology made of ultra-thin Series bottomless box call boxes and new buttons, Zhejiang Onton Elevator latest new research and development from 2014. Product has 14 patents in the center and become the visual appreciation of objects, while also eliminating the need for screws and other miscellaneous accessories, installation easier, both to ensure the integrity of the minimalist space, but also broke the limit product boundaries, creating a new visual forms.