projector screen,interactive whiteboard ,electronic interactive whiteboard ,education equipment Feature Hardware ... , user can directly make notes on the document such as powerpoint, word, excel, pdf, image and other frequently used format and ... -1500-148148701432×1060151×116×164562PH-1500-158158751543×1144173×133×165272 Projector screen, whiteboard, smartboard,PH-1500-101