Primer needed for Reil und Gillert GbR?


I just bough two re coat kits from Reil und Gillert GbR from Germany. I didn’t found any instructions whether it is necessary to apply some primer or not before applying silicone (Cleaning thoroughly of course). I saw some link where primer coat is applied with brush, however instructions doesn’t call any primer and I haven’t found any primer brand, type etc.

Here are instructions that came with the kit:

“ReCoat Kit: two component elastomere filled in doser pouch.
Mix the components and recoat your 3D printer vat. The pouch
carries 75ml of our ReCoat polymere to restore a single vat.”

I send an email to the manufacturer but didn’t received any answer.
Anyone familiar the particular silicon? I would be grateful for any answer.