This internal combustion engine is only used for Model  RC,Toy aircraft as power source,it can only be used for model  airplane flight,model airplane flying show and other entertainment activities.According to the Export control law of the People’s Republic of China and the Export control law of the USA.It  is strictly forbidden to modify the product for illegal use.It is  strictly prohibited to resell the product to the export restricition  country under the law in China.Otherwise,all consequences will  be at your own risk.