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/

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

DKT Co.,Ltd.
GreenCal, Agricultural Gypsum high purity gypsum. GreenCal is suitable for agricultural to improve soils structure with natural substances.
http://www.dktgypsum.com/

Gypsum Technologies Inc.
Canada. Offers engineering design, equipment supply, project and construction management, commissioning, and technical services for the gypsum wallboard manufacturing industry.
http://www.gypsumtechnologies.com

National Gypsum Company
A fully-integrated manufacturer and supplier of products and services used worldwide in building and construction, with primary emphasis on gold bond brand gypsum wallboard and joint treatment compounds.
http://www.nationalgypsum.com

Flour for Europe
Report on a project to formulate a standard flour for calibrating quality-control equipment.
http://ec.europa.eu/research/success/en/agr/0016e.html

Gilt Edge Flour Mills, Inc.
Gilt Edge - millers of hard red winter and spring wheat flour.
http://www.giltedgeflour.com/

Nunweiler's Flour Co.
Nunweiler's natural whole grain organic flour is produced using a unique Hammer Milling process and contains all of the bran and germ of the grain. When white flour is produced, up to 80% of the essential vitamins and minerals are lost leaving essentially just the endosperm of the grain.
http://www.nunweilersflour.com/

Codrico BV
CODRICO is a private independent company which operates business to business in the fields of hydro thermal treatment of grain, pulses and flours by extrusion and maize milling for the production of grits for the cornflaking, brewing, snack and cornflour industries.
http://www.codrico.nl/

Processed Gypsum Products Australia
Offers Gypsum which is 100% natural and will increases crop quality, yields and improve soil structure. Hi-Ag, Turf-Gyp, Micro-Gyp products benefit a wide range of agricultural enterprises.
http://www.pgp.com.au