Gelonghui, April 17 | Donghua Software (002065.SZ) said on the investor interactive platform that the company's main revenue types are system integration revenue and software development revenue. The revenue recognition principle is that customers conduct final inspection of the project. There are many departments involved in the inspection process, the process is long, and there is great uncertainty about the exact time to complete the inspection, so it is reasonable to have a certain deviation in the expected number in the middle of the year.