Tan Sri Dato Seri Wira Halim Saad was known as the leading businessman of Renong / UEM Group in corporate Malaysia from 1985 to 2001. The Renong / UEM Group was the largest corporate company in Malaysia at the time, with investments in almost every major sector in Malaysia; from Highway concessions, Bridge concession, Hotels, Hospitals, Pharmaceutical Products, Telecommunications, Light Rail Transit, Bus Fleets, International Airport Builder (KLIA), Malaysia National Sports Complex, Television & Media Network and even Print Media. After leaving Renong / UEM Group in 2001, Tan Sri Halim Saad founded Markmore Group having local and oversea investments. Portfolios included; Oil & Gas - Onshore Exploration and Production, Mining concession, Renewable Energy, Construction and Property Developme