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Chinese National Standard Category: Technical management

English Title: Type Designation System for Telephone Switchboards
Chinese Title: 电话交换机型号命名方法
Standard No.: YD/T 638.5-1993
Category No.: M01
Issued by:
Issued on: 1993-8-17
Implemented on: 1993-2-1
Status: valid
Superseded by:
Superseded on:
Abolished on:
Superseding:
Word Count:1000 words
Similar Standards: YD XXX 4-1997   DB31/ 653-2012   DB31/ 652-2012   YD/T 1826-2008   YD/T 1827-2008   YD/T 1800-2008   YD/T 1293-2003   YD/T 996-1998   SJ/T 11167-1998   SJ/T 2307.1-1997   YD/T 931-1997   YD/T 932-1997   SJ 50033/99-1995   SJ 50033/94-1995   SJ 50033/101-1995   SJ 50033/100-1995   SJ 50033/95-1995   SJ 50033/93-1995   SJ 50033/97-1995   SJ 50033/96-1995  
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