... UV, it will not be eroded by sea water, chemicals, medicines, oil stains, water-based creatures. It will be no pollution and ... at least 15 years(20 years in fresh water, 15 years in sea water). Only if fastened firmly, the platforms could be ... /beer house, wooden house.4. Platforms for water sport usages.5. Swimming pool, show stages, water passage, provisional bridge/passage way.6. Working ...