Generally, we use life jackets for sea use. EVA foam material is used in the inner part of the hair, and the thickness is about 4cm after 3D compression molding (5-6 pieces of thin hair materials are produced in China, about 5cm-7cm thick). Life jackets produced according to the standard specifications all have their buoyancy standards: 7.5 kg / 24 hours for adults and 5 kg / 24 hours for children, so as to ensure that the chest is above the water surface. The surface shall be made of materials with good water resistance and air permeability. In addition to its buoyancy, attention shall be paid to whether the straddle joint is damaged, so as to prevent no gravity floating after entering the water.

The new standard life jacket is designed and manufactured according to the requirements of IMO msc.200 (80), msc.207 (81) and the national gb4303-2008 standard. The buoyancy is more than 155n, which can meet the requirements of 140kg and 1750mm bust. Equipped with life-saving whistle. The lifejacket is equipped with a throwing floating strap, which can be tied on the lifejacket or lifejacket worn by another person in the water, and also equipped with a rescue lifting ring, so that the rescuers can lift the wearer out of the water and send him into the lifeboat or liferaft. The specification was implemented on July 1, 2010, and the lifejacket is suitable for adults. The product is approved by CCS and GL, and has obtained CCS and EC approval certificate.

Lifejackets can be divided into: 1. Marine lifejacket (Marine child lifejacket)), which is suitable for the life-saving use of all kinds of people in the ocean, coastal and inland rivers. The buoyancy loss of lifejackets should be less than 5% after the lifejackets with buoyancy greater than 113n are immersed in water for 24 hours. Lifebuoyancy buoyancy material: polyethylene foam. The new life jacket is a new life jacket designed and manufactured in accordance with the requirements of IMO msc207 (81) and msc200 (80), which was implemented on July 1, 2010. 2. Marine work lifejacket is suitable for all kinds of personnel working in coastal and inland rivers. The buoyancy loss of lifejacket should be less than 5% after 24 hours immersion. Lifebuoyancy buoyancy material: polyethylene foam. 3. Leisure life jackets: some are also called water sports lifejackets. The fabrics are made of polychloroprene composite materials, with a variety of colors, fashionable and beautiful. It is mainly suitable for playing on water, learning to swim, drifting, fishing and other wearing to play a life-saving and protective role. Buoyancy material: polyethylene foam.