• AZEK Building Products

• Bison Innovative Products

• AMESCO Incorporated

• Air Plastics

• Aqua Glass Corp.

• Architectural Fiberglass Corp.

• Architectural Molded Composites

• Architectural Products by Outwater

• Ashnel Vinyl Fence & Rail

• Associated Fiberglass Enterprises

• Augusta Fiberglass

• Auheng Industries Co. Ltd.

• BF Goodrich

• Bandlock Corp.

• Bayer Corp. Polymers Division Coatings and Colorants

• Bedford Reinforced Plastics, Inc.

• Bedford Technology LLC

• Belco Mfg. Co.

• Bittner Industries

• British American

• C. D. Henderson, Inc.

• CPI - Contemporary Products of Texas Incorporated

• Canterbury International

• Carson Industries

• Chadsworth's 1.800.Columns ?

• Colucci Tile & Marble, Inc.

• Composite Structures International

• Copeland Corporation

• Creative Pultrusions, Inc.

• Custom Decorative Mouldings

• DEC Architectural Composites

• Decatur Plastic Products, Inc.

• Dimensional Plastics Corp.

• Dixie-Pacific

• DuPont Packaging and Industrial Poly

• Ducts, Inc.

• Dudick

• Dunn & Associates, P.A.

• E-Bond Epoxies

• ESICO

• Earl Swensson Assoc., Inc. (ESa)

• Ecomat Inc.

• Edon Corp.

• Ehren-Haus Industries, Inc.

• Evonik Cyro LLC

• Farr Associates

• Fib-R-Dor

• Fiber-Tech Engineering, Inc.

• Fiber-Tech Industries

• Fiberglass Engineering Co.

• Fiberglass Masters Technologies

• Fibergrate Composite StructuresInc.

• Fibertech

• Fypon

• GE Plastics

• Gates & Sons Inc.

• General Veneer Mfg. Co.

• Glasspec

• Glasteel Stabilit America

• Glastic Corp.

• Grate Clip Co.

• Hartmann Sanders

• Hartson-Kennedy Cabinet Top Co.

• Herwig Lighting Co.

• Hot Box

• IKG Industries

• IMCO Reinforced Plastics

• Infiltrator Systems Inc.

• International Grating, Inc.

• Jelks, McLees & Boggs, Inc.

• Joaquin Mfg. Corporation

• Johnston-Morehouse-Dickey Co.

• KEL-EEZ

• Kaylien

• Klein Steel Service

• L.B. Plastics, Inc.

• LandArt Design, Inc.

• M-Boss, Inc.

• MFG Water Treatment Products Co.

• MTI Whirpools

• Marlite

• McNeal Enterprises, Inc.

• Mekco Mfg.

• Mero Structures

• Milbro Refractories, Inc.

• Nemato Composites Inc.

• New Necessities

• Norfield Corp.

• ODF Inc.

• Paragon Products

• Peter Pepper Products, Inc.

• Plastiglas Industries Ltd.

• Plastronics

• Plazit Polygal Group North America

• Poly Vinyl Company

• Polygon Co.

• Polytek Development Corp.

• Precisioneering Ltd.

• Pultrall

• Renew Resources Ltd.

• Retterbush Fiberglass Corp.

• Rochester Colonial Manufacturing

• Royal Crown Limited

• Russell Plastics Technology Co.

• Scenic Productions

• Sea Gull Lighting

• Seidelhuber Metal Products

• Somerset Door & Column Co.

• Spaulding Craft Inc.

• St Thomas Creations

• Stillman Northern

• Stromberg Architectural Products, Inc.

• Structural Plastics Corp.

• Superior Fiberglass

• The Lane Construction Corp.

• The Tricarico Group

• Therma-Tru Corp.

• Thermal Industries, Inc

• Tile Tech Pavers

• Tracy Stocking & Associates

• Trajet Products

• Treadway Industries

• Turncraft

• Vista F.R.P Products Ltd.

• Vomar Products

• Vynckier Enclosure Systems

• Warminster Fiberglass

• White Water Specialties Ltd. (Whitewater West Industries Ltd.)

• Wolfe Industries

• Woodard Custom Painting, Inc.

• Woodland Plastics

• Worthington Industries

• deXstone LLC.