9. ReferencesUNE-EN 16578 has been used as Product Category Rules (PCR) DIN EN ISO 14025:2011-10: Environmental labels and declarations-Type III environmental declarations — Principles and procedures ISO 14040: 2006, Environmental management-Life Cycle Assessment- Principles and framework ISO 14044: 2006, Environmental management- Life Cycle Assessment- Requirements and guideline UNE-EN 15804: 2012+A1 2014: Sustainability of construction works — Environmental Product Declarations — Core rules for the product category of construction products UNE-EN 16578: 2017 Ceramics sanitary appliances — Sustainabi- lity assessment ecoinvent - Database for ecobalancing, version 2.2. Swiss Centre for Life Cycle Inventories, St. Gallen. Europe (EN): EN 997:2012 and EN 997/A1:2015 WC pans and WC suites with integral trap and/or EN 13407:2015 Wall-hung urinals - Functional requirements and test methods/ and/or EN 14528:2015 Bidets- Functional requirements and test methods and/or EN 14688:2015 Sanitary appliances-Washbasins - Functional requirements and test methods and/or EN 14527: 2016 Shower trays for domestic purposes ELCD - European Reference Life Cycle Database, version 2.0. European Commission, Joint Research Centre - Institute for Environment and Sustainability and DG Environment - Directorate G (2008) JRC - European Reference Life Cycle Database, version 2.0. European Commission, Joint Research Centre - Institute for Environment and Sustainability and DG Environment - Directorate G (2008) Waste keys-COMMISSION DECISION of 18 December 2014 amending Decision 2000/532/EC on the list of waste pursuant to Directive 2008/98/EC of the European Parliament and of the Council (2014/955/EU) Abbreviations: PCR = Product Category Rules EPD = Environmental Product Declaration LCA = Life Cycle Analysis Environmental product declaration. Vitreous china.