The life buoy using high density polyethylene for 売 body, filled with high density polyurethane closed-cell foam. Plastic composite life buoy imported polyethylene for shell, filled with imported high-density polyurethane foam, anti-aging, according to GB production, fishery bureau of inspection and survey bureau inspection certificate.Execution standard: the product according to IMO a. 689 (17) for production, its quality conforms to the international convention on safety of life at sea, 1974 (1983 amendment, and MSC. 81 (70), the request of "survival equipment test: this product is suitable for inshore fishing vessels and river used on any ship. This product is one of the necessities of fishing enthusiasts, is all sorts of good partner ship group and inflatable boats.