Mohammed Ali Al swailem Group (MASCO) is a general contractor specialized in different field of construction that range from infrastructure to building, water, environmental and power projects. MASCO was founded in 1984 by: Mohammed Ali ALswailem who had started his carrier in early 1950's as an employee in Arab American Oil Company (Aramco) which sharpen his talent and vision to establish in mid 1960s his own sole partnership corporation which was solely specializing in road construction. In 1970's His Corporation was one of the leading national companies participating in first a construction boom during 70's, building number of major highways and infrastructure projects across the Kingdom such as Qassim-Riyadh Highway. In 1984 the company was incorporated to be a Limited partnership to become full diversified construction company concentrating in Operation and maintenance services