DB4117/T 390-2023
"Internet + hotline + supervision" work specifications (English Version)
- Standard No.
- DB4117/T 390-2023
- Language
- Chinese, Available in English version
- Release Date
- 2023
- Published By
- Henan Provincial Standard of the People's Republic of China
- Lastest
- DB4117/T 390-2023
DB4117/T 390-2023 history
- 2023 DB4117/T 390-2023 "Internet + hotline + supervision" work specifications