2024-05-02 12:22 AM
2024-05-02 12:30 AM
Where are you situated? What Country?
2024-05-06 10:16 AM
Uzbekistan, Tashkent
2024-05-06 10:46 AM
I'd suspect it relates to technology transfer issues.
Check if you have a local ST sales office or distributor who can work with you more directly