ENIG (Chemical Nickel-Gold)
The tinning is as with HAL is a partial covering and has nothing to do with the old method of Lead / tin reflow.
Immersion tin is replaced by the superior surface finish ENIG
Better quality - no additional charge!
This universal surface is distinguished by its high degree of planarity, good ageing resistance, suitability for soft-soldering and bonding and as a contact surface.