In Windows: application.openurl() and unicode path for external apps do not launch

Hi,

I am using Application.OpenURL() to launch an image.

This works.

Code (CSharp):

1.  
2.     path = "C:/Users/admin/Pictures/cat.jpg";
3.     Application.OpenURL(path);
4.  

This one DO NOT work

Code (CSharp):

1.  
2.     // Unity Forum do not allow Chinese Characters as it is spam????
3.     path = "D:/Projects/etl-launcherXX/cat.jpg";
4.     Application.OpenURL(path);
5.  

Example, replaced XX with Chinese characters


To make the path with Chinese characters work, we need to change the language for non-Unicode Program from English to Chinese:


This happens with Windows 7 and Windows 10.
This do not solve the problem. If the user install the app into a path with Indian, spanish, the application will have problem.
How do we make sure the launching of unicode path regardless of language?
I have tested unity 5.6, 2017, both versions having the same problem.

Is Unity for Windows not a unicode program?