Commercial establishments include wholesale trafficking in insulating materials and supplies used in insulation from moisture or water leaks and heat whether natural as Sun or arising by an industrial source, as well as sound-insulating materials, noise and vibrations and radiation effects from electric and magnetic fields and others, it also includes resell materials used to protect metals from corrosion or rust or corrosion and humidity of wood preservative or for prevention of thermal effects. These include articles etc that are used in buildings and civil engineering works and wells or machinery and equipment such as ovens or heat radiation material (hidden) for vehicles or marine equipment or otherwise.
