Tihama Advertising, Public Relations and Marketing Company announced that its subsidiary has extended its exclusive distribution agreement with learning technology company Houghton Mifflin Harcourt. Tihama has renewed its agreement with learning technology company Houghton Mifflin Harcourt as the exclusive distributor of HMH products in the Kingdom of Saudi Arabia. The agreement runs through December 2023 and includes the possibility of further extension through December 2025.