The correct wording is in the rules:
8.15.
Pneumatic components manufactured from 1 June 2002 shall carry a CE mark.
Pneumatic components €˜custom made€™ since 30 May 2002 shall carry a label indicating
their non-conformity with the €˜Pressure Equipment Directive€™ and their non-availability for
sale. Components manufactured prior to 30 May 2002 are not necessarily required to
carry a CE mark.