Professional Cast Quality
Hundreds Projects Prove the Trusted Quality
All DOOWIN products are proven in practice.
Our proof load test water weight bags and underwater air lift bags are supplied to hundreds of companies. Most of them are the professors. And most of them used other brand proof load bags and lifting bags before. Our best quality got their highly praised.
"We are very pleased with DOOWIN. We used many air lift bags from UK or Amercia before. Most of them are very expesive. Since 2011, we started to use DOOWIN air lift bags. Best serivce & reasoanble price. DOOWIN can be trusted because of its high quality."
-- Krishan Kumar from Integrated Subsea Engineering & Service, UAE
"The DOOWIN proof load bags have been a big asset to our load testing division. The water bags are tuff, durable, and made of high quality material which meets our heavy load needs. Our several projects were finished easily with these load test water bags. It is even better than other brand water bags."
-- Jacky from Alpha Testing, Malaysia
Contact us to Learn More >