The quality management system certification is issued by China Quality Mark Certification Group. The scope of application of the certificate is: the manufacturing and sales of MW wind turbine main shaft, pipe molds, forgings and forging blanks, ESR ingots, iron castings, steel castings, and structural components, as well as the design, development, manufacturing, and sales of non-standard nuclear equipment components (post-processing equipment, experimental equipment, and other non nuclear level). This certificate signifies that the quality management system of Tongyu Heavy Industry Co., Ltd. complies with the requirements of GB/T19001-2016 (idt ISO9001:2015) standards, and can provide products that meet legal and regulatory requirements and customer satisfaction, thereby further improving market competitiveness.