启迪环境涨2.22%，成交额1.05亿元，主力资金净流入531.46万元

Group 1 - The core viewpoint of the news is that Qidi Environment's stock has shown a significant increase in trading activity and price performance, with a year-to-date increase of 15.00% and a recent 5-day increase of 8.49% [1] - As of December 25, Qidi Environment's stock price reached 2.30 yuan per share, with a total market capitalization of 3.278 billion yuan [1] - The company has experienced a net inflow of main funds amounting to 5.3146 million yuan, with significant buying and selling activity from large orders [1] Group 2 - Qidi Environment, established on October 11, 1993, and listed on February 25, 1998, is primarily engaged in solid waste disposal engineering system integration, equipment manufacturing, and investment operation services [2] - The company's main business revenue composition includes: sanitation services (53.48%), water supply and sewage treatment (23.37%), solid waste treatment (18.00%), municipal construction and environmental equipment installation and technical consulting (4.11%), and others (1.04%) [2] - As of December 20, the number of shareholders for Qidi Environment was 73,400, a decrease of 1.96% from the previous period, with an average of 19,411 circulating shares per person, an increase of 1.99% [2] Group 3 - Qidi Environment has cumulatively distributed 1.096 billion yuan in dividends since its A-share listing, with no dividends distributed in the past three years [3]