Good afternoon, I am Pedro Requena, Excel and .Net VBA Specialist, I was reading your request and I can do this work since I have an Application developed in Visual Studio 2019, which is called SYSPRIN, Production and Inventory System, its base of mail data in the Free Software Firebird ISQL Tools console.
You can integrate the modules (Masters) of Projects, you already have a module of General Inventory, Suppliers, Clients and a module of user control, you have a Module for input of raw material and finished product manually, it is not suitable for your need, the issuance of vouchers is missing, in the case of being chosen I will work hard to have all the points up to date.
I invite you to visit my portfolio so that you have an idea of the quality of my work: https://www.freelancer.com.ar/u/RequenaP
For more detail of my work in the chat we can talk, the subject of budgets.
Best regards.