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Science-based-targets (SBTs) have been introduced to guide companies to reduce their Greenhouse Gas emissions in line with the level of decarbonization required to keep average global atmospheric temperature increase well below 2°C compared to pre-industrial levels. SBTs seeks to decouple economic growth and emissions to achieve the greenhouse gas emission target of zero by 2050. This paper first investigates the eco−efficiency improvement required for various product technologies to achieve SBTs, considering market growth. Afterwards, it investigates the eco−efficiency limits of these product technologies and identifies where system innovation is required to achieve the required emission reduction while providing product functionality. [ABSTRACT FROM AUTHOR]