IBM won approval for a Mexican facility.

The computer giant, whose IBM Mexico subsidiary has operated for more than 50 years, said it will invest $91 million in the manufacture of personal computers in Mexico, of which 92% will be exported. The operation will be the first wholly owned U.S. company in the microcomputer field in Mexico. It was approved under the relaxation of a law requiring that subsidiaries of foreign companies be more than 51% Mexican-owned. Richard Hojel, chairman of the 10-month-old Apple de Mexico, an Apple Computer subsidiary that is mostly Mexican owned, charged that approval of IBM’s operation was a “complete change in the rules of the game by which other businesses abide.”