| Contracting Parties/Signatories | Signature | Instrument | In Force | Details |
|---|---|---|---|---|
| Brunei Darussalam | Definitive Signature : January 28, 1992 | January 28, 1992 | ||
| Cambodia | Definitive Signature : January 28, 1992 | January 28, 1992 | ||
| Indonesia | Definitive Signature : January 28, 1992 | January 28, 1992 | ||
| Lao People's Democratic Republic | Definitive Signature : January 28, 1992 | January 28, 1992 | ||
| Malaysia | Definitive Signature : January 28, 1992 | January 28, 1992 | ||
| Myanmar | Definitive Signature : January 28, 1992 | January 28, 1992 | ||
| Philippines | Definitive Signature : January 28, 1992 | January 28, 1992 | ||
| Singapore | Definitive Signature : January 28, 1992 | January 28, 1992 | ||
| Thailand | Definitive Signature : January 28, 1992 | January 28, 1992 | ||
| Viet Nam | Definitive Signature : January 28, 1992 | January 28, 1992 |