祥龙电业：公司近三年供水业务毛利率分别为50.46%、50.65%、48.95% 基本保持稳定

Group 1 - The company's water supply business revenue increased from 14.1 million in 2019 to 46.71 million in 2024, representing a growth of 231% [2] - The proportion of related party income in the water supply segment decreased from 34.44% in 2019 to 0.51% in 2024, indicating a significant reduction in reliance on related transactions [2] - The gross profit margins for the water supply business over the past three years were 50.46%, 50.65%, and 48.95%, showing stability despite the changes in sales volume and related transactions [2]