Manufacturing Toolkit license needs to be activated to access the MTK APIs both during the development of your application and in production. The Licensing section of the documentation covers the process of activation in detail.
When shipping your application using the source file licensing mechanism, the license is compiled into your application and the source file itself must not be distributed.
You may only redistribute the following files when shipping your application linked with Manufacturing Toolkit SDK:
You may not redistribute header files (*.hxx) and import libraries (*.lib) with your application.
For more details please refer to Redistributables and the redist.txt and EULA files.