Chicago Convention. 1944 is an instrument of international law which is produced by the International Civil Aviation Organization (/CAO). regulate international civil aviation including aviation safety material that binds to all /CAO member States. Aircraft is a high-tech product in order to set aviation safety requirements and regulations are very strict non-negotiable slightest. https://www.sweetandspicyessentials.com/product-category/dongs-non-vibrating/