| 摘要 |
PURPOSE:To provide a manufacture of an air dispersing device, construction materials and the like required for culture, transportation and the like of fishes and shellfishes, crustaceans, molluscs, sea urchins and the like. CONSTITUTION:A hole 8 is provided in a rectangular-shaped expanded polystyrene molded integrally with a container 2, and a pipe 9 having several ports 10 bored therein is inserted into the hole 8 provided in the expanded polystyrene to make an air dispersing device 35. A polystyrene resin is expanded and molded after sticking sand and the like to the surface thereof. |
