Aljomaih and Shell Lubricating Oil Company Limited (JOSLOC) is a joint venture between Aljomaih Holding Company and Shell Overseas Investment B.V. Joslock mixes, markets and sells Shell lubricating oils within the borders of the Kingdom of Saudi Arabia. The company has a factory in Riyadh for mixing lubricants that uses the latest technologies and produces Shell international lubricants. The company also not only mixes oils locally, but also imports special lubricants from other Shell factories spread around the world.