Which department is better in Ningxiang Gree?

R&D department. Ningxiang Gree has a sales department and a research and development department. The R&D department only needs to work 8 hours a day, and the sales department needs to work 10 hours, so the R&D department is more relaxed. Ningxiang City is a county-level city under the jurisdiction of Hunan Province, managed by Changsha City, which is located at the south edge of Dongting Lake in the northeast of Hunan Province and in the west of Changsha City.