Qingdao Doowin Rubber And Plastic Co., Ltd.  

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Qingdao Doowin Rubber and Plastic Co., Ltd. is a leading professional manufacturer of underwater lift bags, marine salvage bags, water-filled water weight bags, pipeline buoyancy bags, lifeboat and davit load test water weights, water and fuel bladder tanks, and other inflatable buoyancy units. DOOWIN underwater lift bags include parachute type underwater air lift bags and totally enclosed type air lifting bags. The parachute type air lift bags have the open bottom type and enclosed type. The sealed type air lifting bags include cylindrical shape enclosed air lift bags, pillow type flotation bags, elongated float bags salvage tube, individual buoyancy bags, mono buoyancy units, and twin boom pipe floats. These underwater lift bags can be used for marine salvage, pipeline laying work, diving work, buoyancy support. The buoyancy capacity of our air lift bags is from 50kg to 50ton. Our water filled proof bags include crane test water weight bags, low headroom load test water bags, deck... [详细介绍]