The NIA exists to promote the general welfare of the commercial and industrial insulation and asbestos abatement industries; to improve the service, directly and otherwise, to the general public performed by the commercial and industrial insulation and asbestos abatement industries; to cooperate with officials of government agencies in any program considered essential to the national welfare or otherwise; and to do anything necessary and proper for the accomplishment of any purposes herein set forth or which may be recognized as a proper and lawful objective of trade associations