COAD directly produces and installs the high speed door. COAD makes the customized rapid door of customers preference. COAD h ... as 6 overseas corporation in the world. COAD has diverse types of high speed door. COAD-1 has wind-bar and wind-lock system to prevent the separation of sheets at windy condition. COAD-2 is slim model of high speed door which could be installed in narrow space. COAD-3 is self-recovery model. Even if the vehicle collides with the high speed door, COAD-3 could replace the sheet by itself. Save maintenance cost. COAD supports free estimate service for all customers. Thanks. read more