Civil service pension fund APB has put American supermarket chain Walmart and oil giant PetroChina on its investment blacklist. ABP, one of the biggest pension funds in the world, said in a statement it is excluding Walmart because ‘its personnel policy conflicts with international guidelines from the ILO, in particular in relation to working conditions and unionisation’. PetroChina is on the blacklist because of ‘the activities of its parent company CNPC in Sudan and Burma’, the statement said.