ChanQing is a leading manufacture in construction equipments,Scaffolding in China, which established in 1997. Changqing Electronic And Machine (group) Co., Ltd. is a expert in designing and producing all kind of Scaffolding and frame work systems, including Ringlock(Allround), Cup lock, Kwikstage,couplers,frames,shoring props,etc. we have a complete quality control system,which gurantees, the high quality of our products and make sure all progress is made to schedule. All our scaffolding systems are tested to confirm high quality and passed ISO9000, SGS elements.