Product Specification Experts Our Mission is to help construction material suppliers create brand name recognition, market acceptance, and product preference to ensure that their products are specified or accepted as an equal. Experience: Over 20 years in the building materials supply business Close relationships with the specifying community Extensive contact database Flexible Coverage Capability An Expandable Model SRG can expand within the United States to regions where you want to increase sales. Initiating specification representation in a previously uncovered region is fast, easy and cost effective.