注意！这4类企业可享“三免三减半”优惠政策

Group 1 - The article discusses the "Three Exemptions and Three Reductions" tax policy for enterprises engaged in key public infrastructure projects, which allows for a three-year exemption from corporate income tax and a 50% reduction for the following three years [1][5]. - Eligible projects include ports, airports, railways, highways, urban public transport, electricity, and water conservancy, as specified in the "Public Infrastructure Project Corporate Income Tax Preferential Directory" [1][5]. - Enterprises must meet specific conditions, such as spatial independence of different construction batches and the ability of each batch to generate income [2][3]. Group 2 - The article outlines tax incentives for enterprises involved in environmental protection and energy-saving projects, which also receive a three-year exemption and a 50% reduction in corporate income tax for the subsequent three years [5][6]. - Eligible projects include public sewage treatment, public waste treatment, biogas utilization, energy-saving technology upgrades, and seawater desalination [5][6]. - If a project enjoying tax exemptions is transferred during the exemption period, the new owner can continue to benefit from the remaining tax incentives [6]. Group 3 - Tax incentives are available for qualified energy service companies implementing contract energy management projects, with similar tax benefits as outlined for other projects [7][8]. - The article also mentions tax exemptions for drinking water project management units, which receive the same tax benefits for new drinking water projects as other public infrastructure projects [9][10]. Group 4 - The article cites various legal documents that provide the basis for these tax policies, including the Corporate Income Tax Law of the People's Republic of China and relevant notices from the Ministry of Finance and the State Administration of Taxation [10].