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目前我局电源设备和空调设备已有十几个厂家的产品。通信电源的基本配备可分为：交流供电系统、直流供电系统和接地系统。这三大系统的电源配备有国内北京、上海、广州、武汉。山东、深圳、重庆等地生产的设备；进口及合资生产的有美国。英国、丹麦、法国、比利时。西班牙、挪?
At present, I Bureau of power equipment and air conditioning equipment has a dozen manufacturers of products. The basic equipment of communication power can be divided into: AC power supply system, DC power supply system and grounding system. The power of these three systems is equipped with domestic Beijing, Shanghai, Guangzhou, Wuhan. Shandong, Shenzhen, Chongqing and other production equipment; imported and joint production of the United States. Britain, Denmark, France, Belgium. Spain, Norway?