Core Viewpoint - The company, Guojian Group, has established a national solar photovoltaic product quality inspection and testing center, providing comprehensive testing and certification services across the entire photovoltaic industry chain [1] Group 1: Company Services - Guojian Group offers testing and certification services for materials, components, inverters, systems, and outdoor empirical testing [1] - The company serves a diverse clientele, including leading domestic photovoltaic component and material manufacturers, photovoltaic power stations, research institutions, and overseas photovoltaic companies [1] - Guojian Group also provides contracted laboratory services for several international authoritative certification bodies [1]

（文章来源：证券日报） 证券日报网讯 2月4日，国检集团在互动平台回答投资者提问时表示，国检集团拥有国家太阳能光伏 （电）产品质量检验检测中心，可为光伏全产业链提供从材料、组件、逆变器、系统到户外实证的检测 认证服务，国检集团可依据相关标准开展产品符合性测试等服务。 ...