Users
- Aden
- Afghanistan
- Albania
- Algeria
- Angola
- Bangladesh
- Benin
- Bulgaria
- Cambodia
- Cape Verde
- People's Republic of China
- Comoros
- Cuba
- East Germany (former user)
- Egypt
- Equatorial Guinea
- Guinea
- Guinea-Bissau
- Guyana
- Hungary
- Indonesia: (Former user)
- Laos
- Libya
- Madagascar
- Mozambique
- North Korea
- Oman
- Poland
- Rhodesia
- Romania
- Sao Tome and Principe
- Seychelles
- Sierra Leone
- Sri Lanka
- Sudan
- Tanzania
- Uganda
- Vietnam
- Yemen
- Yugoslavia (former user)
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