After the Treaty, a series of joint ventures were created, 50% owned by each country, including GEPSA (oil, with the participation of Hispanoil), GEMSA (minerals, partly belonged to ADARO, a company of INI), Guinextebak (Banco Exterior de Guinea Ecuatorial y España), CETA (Compañía Ecuatoguineana de Transporte Aéreo) and OFICAR, for urban passenger transport.