Group 1 - The company, Zhongji Renjian, is a national third-party certification and inspection service provider for vehicles and machinery equipment [2] - It offers inspection and testing services for military equipment and quality management system certification for weaponry [2] - The company provides testing services related to various types of support equipment, emergency rescue equipment, unmanned intelligent equipment, and relevant software [2] Group 2 - The testing services include basic parameter evaluation, performance assessment, human-machine environment engineering tests, and specialized device inspections [2] - Due to the confidentiality of military products, specific information cannot be disclosed and should be verified through official channels [2]