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Position: Chinese Standard in English/TB 1723-1986
TB 1723-1986   (English Version)
Standard No.: TB 1723-1986 Status:superseded
Language:English File Format:PDF
Word Count: Price(USD): remind me the price change
Implemented on: Delivery:
Standard No.: TB 1723-1986
Professional Classification: TB    Professional Standard - Railway Transport
Status: superseded
Superseded by:TB/T 1723-1994 Railway Telephone Switching Network - Ringing Current and Signal Tone
Superseded on:1995-3-1
Language: English
File Format: PDF
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