Softhang OFFICE document control can use webExtensions technology in the WebView2 browser to start a local application (Ntko browser), and then directly edit MS Office, WPS, Kingsoft Electronic Watch, Yongzhong Office, etc. in the local application Documents are saved to the WEB server to achieve unified management of documents and spreadsheets. It also has the necessary functions of office automation systems such as trace retention, template redundancy, QR code, pdf and tif reading.