SDL has been the official agents / representatives of several international companies for over 37 years some of which are:
- Hollandse Signaalapparaten BV (Philips), the Netherland.
- RDS, USA
- Technology for Communication International, USA
- Interspace Communications (Pvt) Ltd., UK
- Marubeni Corporation, Japan
- PLT Engineering Co. London, U.K.
- Solar Force, France
- Gems International, France
- Sideco, Italy
- Lowel-Light Manufacturing Inc., USA
- SATT Societe, Anonyme De Transactions International, France
- Chimimport, Sofia, Bulgaria
- Nuovo Pignone, Italy
- Pratt & Whitney, USA
- China Xinshidai Company, China