floating box,float

There are three options for you:
Option 1: HDPE(High Density Polyethylene) float
Option 2: Concrete float
Option 3: FRP(fiberglass reinforced plastic) float
HDPE float
HDPE float protects itself from ageing, uviolize, corrosion, wave action and above all, it can be recycled. NO. 1 Marine HDPE float is made up of high destiny polyethylene material and added 2 skins with UV ray and fire propagation proof, closed cell with expanded polystyrene foam, density of EPS required at least 15kg/m³ , it can be enforced with concrete on the bottom of floating to your requirement. Warrant: 15 years under salt-water circumstance.
floating box,float