GB 51421-2020
Engineering technical standards for overhead optical (electrical) cable communication poles
- Standard No.
- GB 51421-2020
- Language
- Chinese
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Lastest
- GB 51421-2020
GB 51421-2020 history
- 1970 GB 51421-2020 Engineering technical standards for overhead optical (electrical) cable communication poles