Gold Member Since 2013
Audited Supplier

Qingdao Doowin Rubber And Plastic Co., Ltd.

Underwater Air Lift Bags, Water Weight Bags, Proof Load Testing Water Bags manufacturer / supplier in China, offering Crane Proof Load Test Water Bag, 100kg Open Bottom Parachute Air Lift Bags, Subsea Buoyancy Underwater Salvage Equipment Underwater Lift Bags and so on.

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Supplier Homepage Why DOOWIN Professional Cast Quality High Quality and Performance for Water Weight Bags & Air Lift Bags

Professional Cast Quality

High Quality and Performance for Water Weight Bags & Air Lift Bags [Jun 03,2016]
High Quality and Performance for Water Weight Bags & Air Lift Bags
Material and Prouduction
Build for Performance

The best quality and performance are alway the real pursue of end users.
This request the perfect combination of best materials with multi-skilled worforce.
So we analyed hundred parts from the PVC coating fabric material to each bolt. We try to look for the best solution for qualtity and performance.


PVC coating fabric is basic to ensure the water bags and lifting bags work well.
DOOWIN use the similar material with UK manufacturer, better than some USA, Turkey, other countries, and all Chinese suppliers.


Our advanced CNC cut technology ensure all material are accuracy and repeatability.
All water bags and air lift bags are weld by advanced Radio Frequency Welded toechnology.

DOOWIN is certified to ISO 9001 : 2008 Quality Managment System.
The whole production process are controlled under it to ensure the high quality and performance. Each water weight bag and air lift bag are produced and test comply with international standard LEEA 051 and IMCA D 016. The products are certficated by BV. 


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