进入90年代以来，随着改革开放不断地深入，经济建设的迅速发展，城镇数量急剧增多，规模不断扩大翻新，物资财富、商品和货币流通总量迅猛增加，接连而起的建筑、高层建筑、地下工程、石油化工企业、公共娱乐场所、加油站、液化气站等大量兴建，人们在生产、生活中用火用电、 Since the 1990s, with the continuous deepening of reform and opening up and the rapid development of economic construction, the number of cities and towns has increased dramatically and the scale has been continuously expanded and refurbished. The total amount of material wealth, commodities and currency has been rapidly increasing. The continuous rise of buildings, high-rise buildings, Underground engineering, petrochemical enterprises, public places of entertainment, gas stations, liquefied gas stations and other large-scale construction, people in the production and use of electricity by fire,