Matrix Laboratories Ltd said it has decided to make investments in several pharmaceutical companies in China and one in South Africa. The company would invest in the shares of Mchem Pharma Group Ltd, Dafeng Mchem Pharmaceutical Co Ltd and Xiamen Mchem Laboratories Ltd (all in China), the company informed the Bombay Stock Exchange. It would also invest in Fine Chemicals Corporation Ltd in South Africa, it said. The decision was taken by the shareholders of the company through a Postal Ballot, it said.