• ADVANTAGE Buildings & Exteriors

• Bell Painting, Inc.

• Buechel Stone Corp.

• Camara Slate Products

• China GHY Stone Carvings

• Cold Spring Granite Company Inc.

• Coronado Stone Products, Inc.

• Dakota Granite Co.

• Delaware Quarries, Inc.

• Edison Coatings, Inc.

• Fiberglass Masters Technologies

• Fletcher Granite Company, Inc.

• Impression

• Innovative Marble & Tile

• International Slate

• International Stone Products, INC.

• Johnson Granite Resources Co.

• La Tierra Interiors, Inc

• Mankato Kasota Stone, Inc

• National Building Granite Quarries Association

• New England Stone Industries

• Niland Company

• Norfield Corp.

• Pentstar

• SOM

• Share Building Products, Inc.

• Stone Legends

• Stone Magic

• Structural Slate Company

• Sunset Stone

• Terrazzo & Marble Supply Companies

• The Granite House

• Vermont Structural Slate Company, Inc.

• Vetter Stone Company

• Walker & Zanger, Inc.

• Waller Brothers Stone Co.

• Wintergreen Ltd