... plane angle≥40°;trunk angle≥30°; 3)Freeboard≥120mm; 4)inflation time≤5S; 5)Float duration≥24h; 6)Buoyancy loss after ... of TPU nylon composite material,automatic(or manual)inflation device, CO2 cylinder,oral inflation tube and outer cover etc.In emergent situation ... falling into water,it can be inflated by the automatic inflation device within five seconds or by manually pulling the toggle ...