HG/T 20637.1-2017 Compilation of engineering design documents for automatic control of chemical plant Specifications for the composition and compilation of engineering design documents for automatic control (English Version)
2018HG/T 20637.1-2017 Compilation of engineering design documents for automatic control of chemical plant Specifications for the composition and compilation of engineering design documents for automatic control
1970HG/T 20637.1-1998 Guid for preparation of engineering documents of instrumentation