My output (csv/json) from my newly-created program (using .NET framework 4.6) need to be converted to a IBM-1027-codepage-binary-file (to be imported to Japanese client's IBM mainframe), 
I've search the internet and know that [Microsoft doesn't have equivalent to IBM-1027 code page](https://www.aivosto.com/articles/charsets-codepages.html).  

So how could I output a IBM-1027-codepage-binary-file if I have an UTF-8 CSV/json file in my hand?