-OA office software, e-government OA automation system. It is recommended to inspect and try Haiyun Zhongteng OA intelligent office platform, which adopts international java language and cross-platform architecture and has been continuously developed for more than ten years. Professional clients equipped with Android and Apple's ios mobile office app, DingTalk and WeChat enterprise interface provide a large number of controls for free. It also provides tailor-made expansion and development, and provides localized installation and configuration implementation training services.