GB/T 11820-1989

The requirements for urban optical fiber cable systems joined to national public telecommunication network

NORMA vydaná dňa 25.10.1989

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The information about the standard:

Designation standards: GB/T 11820-1989
Note: NEPLATNÁ
Publication date standards: 25.10.1989
Country: Chinese technical standard
Kategória: Technické normy GB