Hello, xiooli
Ketcher is released under GNU AGPL license, and if you are using Ketcher as a component in QtWebView, then this component should be released under AGPL, and this mean that the whole application should be released under the same license. We contribute to open source software communities, and want our code to be used in the same way.If open source license does not fit you, do not hesitate to contact me directly.
Mikhail