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特点Characteristics 1. 采用欧美进口压缩机头. Europe and America imported compressor head 2. 铜管采用无氧焊接法. oxygen-free welding method used for copper pipe 3. RS485通讯功能,实现自动化管理.选购 RS485communication function to realize autoimmunization management optional 4. 加热功率切换功能. heating power change-over function