立昂技术：公司数字城市系统业务服务众多行业客户

Group 1 - The core viewpoint of the article is that Lian Technology (300603) is actively engaging with investors regarding its digital city system business, which serves a wide range of industry clients [1] Group 2 - The digital city system business of the company caters to various sectors including government, operators, finance, agriculture, forestry, energy, water conservancy, transportation, law enforcement, and education [1]