... 1. Economical : both in use and purchase 2. Flexible : as a material and as application 3. Environmentally ... hollow sheet can be used as advertising board, show board, brand mark, light box board, etc.3) Turnover box: For ... Board: Partition, protection board of flooring,wall,ceiling board, etc. 5) Industry Uses: Protection board, padding board, luggage carrier, separating board, baseboard, cross board ...