About

About LJ Inc. About LJ Inc. Supreme Manufacturing Inc. was founded in 1990 Supreme’s main product and service lines are; floating clamshell dredges, floating and over-land conveyors, associated dredging equipment; clamshell, dragline, and drag-scraper buckets, rock barges, and service boats, as well as heavy-duty material handling equipment such as; overhead cranes, bins, and hoppers. Headquartered in Stoneboro, Pennsylvania, Supreme Manufacturing Inc. was founded in 1990, and has since become the world leader in the design and manufacturing of floating clamshell dredges. To schedule a tour of our facility, or one of our many customer sites please visit us at: Suprememfg.net LJ Inc. is a turn-key design/build contractor serving the construction materials industry. LJ's services include: Plant Design & Engineering : -Aggregates -Ready Mixed Concrete -Asphalt -Slag Concrete Electrical Trucking HVAC IT Erection Fabrication Supreme Manufacturing Inc. was founded in 1990 Supreme’s main product and service lines are; floating clamshell dredges, floating and over-land conveyors, associated dredging equipment; clamshell, dragline, and drag-scraper buckets, rock barges, and service boats, as well as heavy-duty material handling equipment such as; overhead cranes, bins, and hoppers. Headquartered in Stoneboro, Pennsylvania, Supreme Manufacturing Inc. was founded in 1990, and has since become the world leader in the design and manufacturing of floating clamshell dredges. To schedule a tour of our facility, or one of our many customer sites please visit us at: Suprememfg.net