Division PRODUCT FAMILY: PRECAST NORMAL/LIGHTWEIGHT/AUTOCLAVED AERATED CONCRETE PRODUCTS (1/1) - Commission decision of 25 January 1999 on the procedure for attesting the conformity of construction products pursuant to Article 20(2) of Council Directive 89/106/EEC as regards precast normal/lightweight/autoclaved aerated concrete products (notified under document number C(1999) 118) (Text with EEA relevance) (1999/94/EC)