KUALA LUMPUR (Reuters) -Malaysia will not cross certain "red lines" in its negotiations with the United States, its trade minister said on Wednesday, as the country continues talks with Washington to lower a 25% tariff imposed on its exports. Investment, Trade and Industry Minister Tengku Zafrul Aziz declined to go into detail about what those limits were, citing non-disclosure agreements, but he said the U.S. had made demands that encroached on Malaysia's national interests and sovereignty. "If the deal does not benefit Malaysia, we should not have a deal... We have to be firm on that."