Cimpor will have to take a partner in its South African unit Natal Portland Cement and may have to transfer as much as 26 per cent under new legislation, Jornal de Negocios reported, citing a Cimpor internal document. Cimpor will have to give up a stake in NPC in order to comply with new legislation affecting natural resources extraction companies, within the framework of the Black Economic Empowerment programme, the report said.