DB31/T 511-2010
Hotline service quality specification (English Version)
- Standard No.
- DB31/T 511-2010
- Language
- Chinese, Available in English version
- Release Date
- 2010
- Published By
- Shanghai Provincial Standard of the People's Republic of China
- Latest
- DB31/T 511-2010
DB31/T 511-2010 history
- 2010 DB31/T 511-2010 Hotline service quality specification
