Joinrun Concrete Placing Boom have been developed based on the advanced finite element analysis and dynamics analysis, and using the newest materials (to ensure sufficient anti-dumping moment) and control techniques. It reduce manpower cost, which is the reliable product to ensure the quality of concrete placement; meanwhile, it is able to effectively distribute and pave the concrete which is not subject to the compacts from environment and construction height, it is a ideal equipment to achieve perfect concrete placement. In order to satisfied for different requirement of construction field. Joinrun completed the research and development of truck-mounted concrete pumps and rapidly put the full range into production to meet market demands.