【Summary description】Luoyang Tengyu Tunnel Machinery Co., Ltd. was formerly subordinated to Tunnel Engineering Bureau of the Ministry of Railways. Founded in April 2006, it is a professional company integrating R&D, design, manufacturing and repair of tunnels, bridges and hydraulic machinery. The Company has passed ISO 9001 Quality Management System Certification, Environmental Management System Certification and Occupational Health and Safety Management System Certification.