| Company | Activity | Activity of Mechroll Bt. |
| SKF Co. | Bearing production and distribution | Housing production,
bearing transformation |
| Siemens Co. | Production of electrical devices | Part production |
| Ganz Transelektro Co. | Production of electric rotary systems | Part production |
| Knorr-Bremse Ltd. | Production of railway braking systems | Part production |
| Confidenza Ltd. | Bearing distribution | Bearing transformation |
