Obtaining disaster response feedback from the epicenter and surrounding areas in the shortest possible time is an important part of post-earthquake emergency work and the most important aspect of emergency decision-making. Work practice has shown that. compared to passively waiting for personnel to report. actively calling the affected areas is more conducive to quickly obtaining disa... https://www.roneverhart.com/Modern-Rectangular-Keyed-Entry-Pocket-Door-Emtek-2113/