When you arrive you will be asked to sign in if the building has a reception and we will then keep sign in sheets for at most 2 months.
Pan gyrhaeddwch, gofynnir ichi gofnodi’ch enw, os oes derbynfa yn yr adeilad, a byddwn yn cadw’r ffurflenni llofnodi am ddeufis ar y mwyaf.