带你了解企业所得税所得减征、免征优惠（一到三）

Group 1 - The article discusses tax incentives for enterprises engaged in specific agricultural, environmental protection, and public infrastructure projects, highlighting reduced corporate income tax rates for qualifying activities [4][5][6][8]. - Enterprises involved in the cultivation of flowers, tea, and other beverage crops, as well as aquaculture, can benefit from a halved corporate income tax rate [5]. - Income from investments in state-supported public infrastructure projects, such as ports, airports, and public transportation, is exempt from corporate income tax for the first three years and halved for the next three years [4][5]. Group 2 - Income from eligible environmental protection and energy-saving projects, including public sewage treatment and waste management, can also enjoy similar tax reductions [6][8]. - For technology transfer income, enterprises can be exempt from corporate income tax for amounts up to 5 million yuan, with a reduced rate for amounts exceeding this threshold [13][14]. - The article outlines specific conditions for technology transfer to qualify for tax incentives, including recognition by relevant authorities and the nature of the technology being transferred [15][20].