IHB is a holding company managing a portfolio of companies. Depending on the share and the possibility for IHB to influence their management, these companies are classified as follows: subsidiaries (s) - companies controlled by IHB, as well as their own subsidiaries (ss).
- IHB 3Design AD
- IHB Electric AD (l)
- Classification Certification
- Maritime Holding AD
- Bulgarian Register of Shipping EAD
- International Industrial Holding Bulgaria PLC