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Welcome to American Institute of Chemical Engineers (AIChE).
http://www.aiche.org/
Formed to aid and encourage the utilization of scientific and engineering developments by the industry.
http://www.societe.org/
Offers list of chemical consultants in various fields of chemistry, metallurgy, and related fields.
http://www.chemconsult.org/
Welcome to Institution of Chemical Engineers.
http://www.icheme.org/