About I.W.M.
Durable and reliable: As a manufacturer of high-quality diaphragm pressure expansion vessels and compressed energy storage tanks, I.W.M. uses its expertise and optimizes processes to strictly control the process of each product. Based on rigorous design and R&D capabilities, the company produces a wide range of high-performance pressure expansion vessels in its modern factory in Jiangsu Province, China, for heating and cooling systems, drinking water and sanitary water systems, hot water storage systems, and pneumatic storage and supply systems.