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National Gypsum Company is a company based in Charlotte, North Carolina, that produces drywall gypsum boards in the US. It has 17 gypsum board plants in the US and presents itself as a fully integrated building products manufacturer. It is a private company, incorporated as New NGC, Inc. in 1993.
Sherwin Industries, Inc. is a Milwaukee, WI-based company in the Manufacturing sector.
Polyvel is a Hammonton, NJ-based company in the Manufacturing sector.
The Cover Co is a Branchburg, NJ-based company in the Manufacturing sector.
Midwest Ready Mix Saw and Seal is a West Des Moines, IA-based company in the Manufacturing sector.