where a supplier’s participation in preliminary market engagement has put the supplier at an unavoidable unfair advantage (see section 16 (Preliminary market engagement))
pan fo cyfranogiad cyflenwr mewn ymgysylltu rhagarweiniol â'r farchnad wedi rhoi mantais annheg anochel i'r cyflenwr (gweler adran 16 (Ymgysylltu Rhagarweiniol â'r Farchnad))