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86 Inch LED OPS PC Infrared High Performance Infrared Touch Interactive Blackboard Office Equipment FHD 4K Smart Whiteboard with CE Dual OS PC Machine, Find Details and Price about Whiteboard Easel for Teachers Electronic Whiteboard from 86 Inch LED OPS PC Infrared High Performance Infrared Touch Interactive Blackboard Office Equipment FHD 4K Smart Whiteboard with CE Dual OS PC Machine - SHENZHEN JIYUANXIN ELECTRONICS CO., LTD.