1999/453/EC: Commission Decision of 18 June 1999 amending Decisions 96/579/EC and 97/808/EC on the procedure for attesting the conformity of construction products pursuant to Article 20(2) of Council Directive 89/106/EEC as regards circulation fixtures and floorings respectively (notified under document number C(1999) 1484) (Text with EEA relevance)