Yonglun regards product quality as the life of the enterprise, adopts international IEC standards to organize production and testing, has passed ISO9001 quality management system certification, has advanced testing equipment and masters the most complete and effective testing methods. Yonglun always adheres to the principle of "focus, professionalism" , Integrity, Sharing" is the business idea and service concept. We are willing to develop together with customers and suppliers with the greatest enthusiasm and the spirit of never giving up, and create a better future with customers and suppliers.