Marjan Factory Company (Marjan Al Muhaidib) is a Saudi manufacturer of water tanks and integrated water solutions in the Second Industrial City, Dammam. It is one of the companies of Hossam Yousef Al Muhaidib, a family name in the tank industry that the company reports has made fiberglass and polyethylene tanks for more than 25 years. Its products include polyethylene water tanks, fiberglass water tanks, water pumps, water purification filters, water heaters, thermal pipes, food waste disposers, manhole covers and Marjan electric float switches. The factory reports a team of engineers and production managers and holds ISO 9001:2015 certification, and it supplies, installs and maintains its products through a network of branches and agents across most regions of the Kingdom, including Riyadh, Al Kharj and Wadi Al Dawasir.