| Associated with (no title) |
| Disassociated from DEL |
| Associated with ISO 6936 |
| Associated with ISO 6936:1988 |
| Associated with KS X 1022:1994 |
| Associated with KS X 1022 |
| Disassociated from (no title) |
| Associated with GB/T 7514-1987 |
| Associated with GB 7514 |
| Associated with GB/T 7514 |
| Associated with ISO 6936:1983 |