China
Qingdao Doowin Rubber and Plastic Products Co., Ltd is a leading manufacturer of water weight bags, underwater lift bags, marine salvage bags, pipeline floaters, lifeboat water bags, fenders & buoys. They provide professional underwater lift bags designed for marine salvage that can air-lift up to 50 tons with customizable sizes and shapes. Water weight bags are used for load testing in cranes and offshore rigs, ranging from 650 kg to 13,000 kg capacity. Pipeline buoyancy units have a standard buoyancy capacity of 250 kg to 50 tons. The company has conducted proof load tests using water weight bags on 3,500-ton floating cranes and 700-ton cranes in the past. Founded in 2011, Doowin serves marine and oil industries with its specialized products.
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