Dear
I developed INVOCE app with c++/c# with printing function as pdf.
If you want, i can send source.
I am a reverse engineer, and have a plenty of experiences in programming of Android, x86/x64Assembler, assembly, EXCEL VBA, C++, C#, etc.
I read carefully the demands of your project.
Please send details of project, I will soon start the work even though during discussing.
Looking forward to chatting with you soon.
Seriously yours.
Thank you!!!
Please send your file.