GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values*, 2008-07-16 Update
DB31/T 60.1-1991 history
1991DB31/T 60.1-1991 Basic Requirements for Medical Inspection Report Form
DB31/T 60.1-1991 Basic Requirements for Medical Inspection Report Form was changed to GB/T 13234-2018 Determination of energy savings in organizations.