Historic Plaster Conservation Services Limited
Historic Plaster Conservation Services has developed specialised techniques for strengthening existing plaster in ceilings and walls of historically and architecturally significant buildings to conserve and restore historic heritage plaster.
http://www.historicplaster.com/

Umehiko
Natural stone tiles, roofing, and gypsum fibrous plaster manufacturer.
http://www.ahe-online.com

Rossi Stucchi S.n.c.
Plaster Mouldings for Interior Decorating. Rossi Stucchi is specialized in realization fine quality ornamental plasters mouldings
http://www.rossistucchi.com/plastermouldings.htm

Balmer Architectural Moulding
From crown molding for interior decorating to architectural moldings for interior design. Balmer crown moulding and decorative mouldings fit your design. Get catalogs, prices and ideas for architectural details, millwork and trim.
http://www.balmer.com

Master of Plaster Finishing Systems, Inc.
Master of Plaster Finishing Systems, Inc. specializes in Premixed Restoration Plaster, New Construction Plaster Supplies, Plaster Restoration, Plaster Finishing, Wholesale Plaster, Wholesale Venetian Plaster and more
http://www.masterofplaster.com

BPB Formula
BPB Formula, the industrial plaster division of BPB plc, is a world leading supplier of formulated plaster and gypsum products.
http://www.bpbformula.co.uk/

Gypsum Association (USA)
Represents manufacturers of gypsum board in the U.S. and Canada and provides technical information and assistance to the construction industry and code enforcement community regarding gypsum board.
http://www.gypsum.org/

Reproduction Plaster Co Ltd
Specialized in plaster cornice restoration/reproduction. Also manufactures large variety of fibrous plaster mouldings and provides services for custom-designs. Scotland.
http://www.reproplaster.co.uk

Oren Companies
A group of companies that supply and/or install all types of plaster, stucco, EIFS, and specialty finishes. Also specializes in plaster restoration and ornamental plaster casting.
http://oren-usa.com/

GP Gypsum Corporation
Gypsum at Georgia Pacific Building Products. High quality gypsum wallboards and gypsum drywall from one of North America’s leading gypsum board manufacturers.
http://www.gp.com/build/ProductGroup.aspx?pid=1064