The GMBA is an employers organisation serving the interest of its members in the building and allied trade industries.

As the association representing expanded polystyrene manufactures, raw material suppliers and equipment suppliers in South Africa, it is EPSASA's mission to promote and grow the expanded polystyrene market. EPSASA will achieve this by informing and educating the general public, as well as decision makers and opinion formers on the public and private sector on the benefits, multiple uses and environmentally friendly nature of expanded polystyrene products EPSASA will strive to ensure that the quality and performance standards of its members are world class through the establishment and monitoring of standards, and will also act on their behalf in matters of common interest.

The Association of Architectural Aluminium Manufacturers of South Africa (eAMSA) was founded by eight companies in July 1974 to foster trade and commerce in relation to those persons associated in the manufacture and installation of architectural aluminium structures. Its main objective is to promote commercial and group interest. Currently the eAMSA Group administers, beside the architectural aluminium industry, the glass, ceiling and partitioning and insulation industries