Hello Upbright,
I have graduated from University for 2 years, as a mechatronics engineer. Currently, I am also working with Indian customer on mechanical design support.
Unfortunately, I have no idea about ACBs, but I know BOM, Drawings, Specifications, Raw Material Vendor list...
The only point I think I am suitable for your project is my eager to study.
If it is ok from your side, please feel free to contact me for further information, and send me materials for reference first. Maybe I will need training from your side.
Thank you.