4.1 Declared/functional unit ....................................................................................................................................................... 10 4.2 Technical specification, lifespan and reference service life (RSL) ........................................................................................ 10 4.3 System boundaries .............................................................................................................................................................. 10 4.4 System diagram ................................................................................................................................................................... 10 4.5 Cut-off rules ......................................................................................................................................................................... 11 4.6 Allocation rules .................................................................................................................................................................... 11 4.7 Data quality requirements .................................................................................................................................................... 11 4.8 Environmental performance indicators ................................................................................................................................. 13 4.9 Including multiple products in the same EPD ....................................................................................................................... 13
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