OPALON Prefabricated Structures Construction Industry Trade Co. Inc. was established in 1996 to produce prefabricated permanent and temporary buildings.

Permanent modular buildings are structures obtained by producing all parts of the building in a controlled factory environment with the "off-site" method.

On-site construction is the most traditional method of building, where the building parts are produced in the factory and sent to the site in packages to complete the assembly.