DB64/T 1175-2016 Regulations for the preparation of a special article on the design of safety and occupational disease protection facilities for metal and nonmetal mine construction projects (English Version)
Ningxia Provincial Standard of the People's Republic of China
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DB64/T 1175-2016
DB64/T 1175-2016 history
2016DB64/T 1175-2016 Regulations for the preparation of a special article on the design of safety and occupational disease protection facilities for metal and nonmetal mine construction projects