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ShenZhen YuanFan Digital Technologyt CO.,Ltd   끓틔 Click to enlarge image               Video door phone, 1 line connect,transmit for video, voice ,data and power supply (YF-900FC-C)     Video intercom system,video door phone 1 wire connect/transmit of video, voice, data and power supply (YF-900FC-B)              Video door phone, intercom system, hands free video door phone, color video door phone (YF-900FC-A)         ShenZhen YuanFan Digital Technologyt CO.,Ltd版权所有1997-2012 电话:86-0755-33578080 传真:86-0755-