1)2.5kg life buoy& swim lifeguard are fit for all kinds of vessels and aquatic equipments, used by the seamen and passengers for life saving.
2) The life buoy& swim lifeguard of more than 4.0kg are used to release the self activated smoke signal, supplying life buoy for rescues and research direction for the rescues.
3) In according with SOLAS 1974/1996, the international life-saving appliance code, and MSC.81 (70)