Shandong Shuanglun (山东双轮股份有限公司) has made centrifugal pumps and pump packages since 1952. It supplies water supply, HVAC and fire water systems for buildings, municipal works, transport, power, petrochemical and metallurgy. It has three manufacturing parks covering more than 400,000 m², over 1,000 employees and offices in North America, Europe and Southeast Asia. Its fire booster, pressure-stabilising and dual-power water supply equipment holds fire product certifications 5982026ZY140001, 5982026ZY140002 and 5982020ZY140411 from the Tianjin Fire Research Institute of the Ministry of Emergency Management.