Core Viewpoint - The company, Zhongji Renjian (301508), is a national third-party certification and inspection service provider for vehicles and machinery, focusing on various inspection and certification services [1] Group 1: Business Overview - The main business includes inspection and testing services for complete vehicles, military equipment, engineering machinery, special equipment, civil aviation ground equipment, and components [1] - The company also provides product certification, system certification, and service certification [1] Group 2: Recent Developments - In January 2023, the company obtained recognition as a product testing and experimental institution from the classification society, enabling it to offer safety testing for marine lithium batteries and environmental adaptability tests [1] - The company can conduct performance tests and environmental tests for battery management systems, as well as nitrogen oxide detection and exhaust pollutant testing for marine engines [1] - Additional services include electromagnetic compatibility testing for navigation equipment and radio communication devices and systems [1]