Plug hole is for plug welding instead of spot welding.
I don't know why there were memtioned as "Plate fin" and price
has conflict as No 3.has additional hole.
The list of my team is correct. We don't know which list our
commercial eventually used although we supplied ours...
Sorry, I don't know detail....
Anyway as far as EDS has no spot welding equipment, EDS need to
purchase No3, with hole for plug welding.
Maybe our commercial miswrote plate fin for difusion as EGAT will
not send plate fin CB no more.
Let us check detail after our holiday.