YDJ 1-1989
Specification for installation design of posts and communications power supply equipment (English Version)
- Standard No.
- YDJ 1-1989
- Language
- Chinese, Available in English version
- Published By
- Professional Standard - Post and Telecommunication
- Latest
- YDJ 1-1989
- Replace
- YDJ 1-79
YDJ 1-1989 history
- 1970 YDJ 1-1989 Specification for installation design of posts and communications power supply equipment
