| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| YBJ 64-1991 | English | RFQ |
ASK
|
Days<=3
|
Symbology Specification for Telecom Design Graphics of Steel and Iron Enterprise
|
YBJ 64-1991
| |
YBJ 64-1991
|