Qfb-200 diving buoyancy vest this product is a buoyancy adjusting device, which mainly helps divers adjust their floating state by filling and exhausting it, so as to make diving activities more comfortable and safe. Qfb-200 diving buoyancy vest is composed of body, back frame, bellows and medium pressure hose. The body is made of environment-friendly TPU material and formed by high cycle heat sensitivity. The back frame can be equipped with submersible gas cylinder. One end of the bellows is connected to the air inlet valve on the shoulder, and the other end is connected to the medium pressure pipe through the quick plug. The air bag can be inflated by operating the button on the bellows, or manually inflated by biting the mouth. Buoyancy compensation device is commonly known as back flying, buoyancy
