| Company | Location |
|---|---|
| TDA Research Inc. | Wheat Ridge, Colorado, United States |
| TDI Group SRL | Rome, Italy |
| TDK Corp. | Garden City, New York, United States |
| TDK-Lambda Americas | Neptune, New Jersey, United States |
| Tecan Group Ltd. | Maennedorf, Switzerland |
| Tecconcept | Enghien, Belgium |
| TechEx.com | Plant City, Florida, United States |
| Technanogy Materials Development | Santa Ana, California, United States |
| Technesium TC | London, United Kingdom |
| Technic Inc. | Cranston, Rhode Island, United States |
