| 摘要 |
A message board has a surface layer made of a protectively mounted paper or plastic sheet which has a smooth plane adapted to be erasably written thereon with a whiteboard marker. An intermediate mounting layer is overlapped with and connected to the surface layer, and is made of a hard polyvinyl chloride or polyethylene. A base layer is overlapped with and connected to the intermediate mounting layer, and is made of a soft polyvinyl chloride to be attached directly to and removed from a glazy surface repeatedly.
|
