Mr. Xu holds the titles of Senior Engineer, Registered Supervising Engineer, Traffic Supervising Engineer, Cultural Relics Supervision Responsibility Engineer, First Class Registered Constructor, Consulting Engineer (Investment), and First Class Cost Engineer. He is an expert in the expert pool of Shijiazhuang Construction Engineering Dispute Review Center, a member of the Expert Committee of Hebei Province Construction Market Development Research Association, and an expert in the construction industry in Hebei Province. Mr. Xu actively participated in the preparation of industry standards and works, including "Research on Construction and Project Management Technology", "Risk Management Standards for Potential Defects in Residential Engineering Quality" DB13 (J)/T8501-2022, "Technical Standards for Restoration and Utilization of Historical Buildings in Hebei Province" DB13 (J)/T8505-2022, "Work Guidelines for Smart Supervision Department" and "Work Guidelines for Supervision of Sub projects with High Risks" by Hebei Construction Market Development Research Association. He has contributed his professional wisdom and strength to standardize industry operations and improve engineering management level. He has profound professional accumulation and practical experience in the field of engineering construction, and can provide comprehensive technical support and professional guarantee for the smooth progress of the company's projects. He is the core strength and professional authority of the company in the field of engineering construction.