What companies does Bollore own?

Can you elaborate on the business interests of the Bollore Group? I'm particularly interested in understanding the companies that Bollore owns or has significant stakes in. Are there any key industries or sectors that Bollore has a strong presence in? Additionally, are there any notable acquisitions or investments that have shaped the group's portfolio over the years? I'd appreciate a concise overview that highlights the group's main holdings and their significance in the broader market.