Concept 04 is also transforming furniture, it could be used as chair and table. Basically used with cross joining system, it could provide high strength. Also, could be used as some combination of them.
Concept 03 is a modular system chair or bench. One module will provide both sides seat and it will be very useful at the narrow hallway. Middle panel will be used as advertising space. It could be modified with any number of modules.
Concept 02 is a convertable version of lounge chair. It could be used as lounge chair and desk. It could be very useful combination inside display booths.