YD/T 639-1993
Management method of type designation for products in posts and telecommunications industry (English Version)
- Standard No.
- YD/T 639-1993
- Language
- Chinese, Available in English version
- Release Date
- 1993
- Published By
- Professional Standard - Post and Telecommunication
- Status
- 2009-12
- Latest
- YD/T 639-1993
YD/T 639-1993 history
- 1993 YD/T 639-1993 Management method of type designation for products in posts and telecommunications industry
