It looks like a notepad, but it can be used as a portable whiteboard "NUboard (Nu Board)"is. There is a white board part and a transparent sheet part, and it is said that it can use various ways ...
Many people associate notations such as 'A4', 'A3', 'B1', and 'B2' when they hear 'paper size'. This notation used for the size of copy paper and notebooks is defined by the international standard ISO ...
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