Group 1 - The company, Xince Standards (300938.SZ), is a comprehensive testing organization that provides various testing services including reliability testing, physical and chemical testing, electromagnetic compatibility testing, product safety testing, and life health testing [1] - The company serves clients across multiple sectors such as automotive, electronic and electrical products, consumer goods, industrial products, food and agricultural products, and environmental services, offering testing reports or certificates [1] - The company possesses the capability to conduct EMC testing for electronic and electrical products, which includes testing services for various PCB circuit boards [1]