jkdz.com
手机信号屏蔽器|监狱信号屏蔽器品牌|手机屏蔽器厂家-上海集科电子
上海集科电子于90年代开始涉足信息安全、技术防范领域,主要针对监狱、看守所、军警及国家安全等特种场合研发生产手机信号屏蔽器材并为客户提供整套手机信号屏蔽系统解决方案。
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