The billionaire Adani family, which is building an in-house construction and engineering ecosystem by acquiring ITD Cementation and PSP Projects, is actively seeking additional acquisition opportunities, according to bankers.As part of its $100 billion investment plan by 2030, the Ahmedabad-based group has undertaken several large-scale construction projects, including the Dharavi redevelopment, Ganga Expressway, a mega convention centre in Mumbai and airports.