Side opening bi-folding door systems are usually used in applications where space requirements are more stringent or where larger door sizes are needed, such as hospitals, shopping malls, freight elevators and so on. In hospitals, it can better meet the needs of access to beds, stretchers and other equipment; in shopping malls, it can provide more spacious passage space for customers and goods. We are specializing in elevator door operating system which includes elevator electrical device and car door operators for elevators and escalators.The landing door hanger provides you with smooth running and all-round protection. -MS series door system represents the design concept that is infinitely close to tradition, and it can provide solutions for various types of elevators (heavy-duty door, glass door, fire-proof door, water-proof door, explosion-proof door, folding door, etc.). -MS series landing door system adopts MS209 type test door lock stru…