The key to zhongcheng's continued growth and success is the total commitment to the highest standards of heat pump quality and customer support. These standards are achieved through strict adherence to rigorous quality controls at every step; from engineering, machining, manufacturing and assembly to delivery and after sale support. zhongcheng's participation in ISO Certification programs further demonstrates its commitment to quality. Our lighting truss,truss system, mobile stage, performance of equipment such as rack cases manufacturing enterprise, etc. have the CE mark of approval.