This certificate is an environmental management system certification qualified by China Quality Mark Certification Group, which apply to manufacturing and sales of Main shaft for MW grade wind turbine generators, pipe moulds, forgings and the blanks, electric-slag-remelting steel ingots, iron casting, steel castings and structural components; design, development,manufacturing,and sales of non-standard nuclear power equipment component (non-nuclear grade of post-processing equipments experimental equipments,etc.) This certificate indicates that the environmental management system of Tongyu Heavy Industry Co., Ltd. fulfills the requirements of GB/T24001-2016. (idt ISO14001:2015) . Tongyu Heavy Industry Co., Ltd can provide products that meet legal requirements and customer satisfaction, as well as undertake corresponding social responsibilities, thereby further improving market competitiveness.