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1999年,是中国安防技术防范工作成功开展的第20个年头,在这值得纪念的日子里,公安部科技局于11月30日至12月3日在上海召开了全国公安安全技术防范工作会议暨先进集体和先进个人表彰大
In 1999, it was the 20th anniversary of China’s security technology prevention work being successfully carried out. On this memorable day, the Science and Technology Bureau of the Ministry of Public Security held a working conference on prevention and control of public security security technology in Shanghai from November 30 to December 3 Cum advanced collectives and advanced individuals to recognize large