I've been getting 2 different versions of Transformators. One is used by my stations and the other is useless (they don't even count for quantity in "Trade Goods"). I put the different items on 2 different, color coded, ships near my stations for Developer inspection. I hope that helps. Also, I built bright blocks onto a station so you almost can't miss where all this is. ;)
Official Test Server
sector 9:36
Ship names:
Good Tran, Bad Tran