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We can't tell if fire extinguisher is out-of-date or not from the outside of the existing box, and it is troublesome to open the door to check. The design doesn't change the fire extinguisher but the box, helps users be clear about the fire extinguishers deteriorative or not at a glance without opening the box, so as to change in time.Through magnifying glass installed on the fire extinguisher box to magnify use data, it can help users be clear about the status of fire extinguishers at a glance.
Southwest Petroleum University
ChengDu, SiChuan, China
Yujing Qin,
Southwest Petroleum University
Xu Liu,
Southwest Petroleum University
Minjie Lv,
Southwest Petroleum University
Lichuan Lei,
Southwest Petroleum University