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75 Inch OEM Board Educational Equipment IR Drawing Professional Smart Infrared Induction Whiteboard with RoHS Electronic Display Case Interactive Flat Panel, Find Details and Price about Whiteboard Easel for Teachers Electronic Whiteboard from 75 Inch OEM Board Educational Equipment IR Drawing Professional Smart Infrared Induction Whiteboard with RoHS Electronic Display Case Interactive Flat Panel - SHENZHEN JIYUANXIN ELECTRONICS CO., LTD.