Competitive advantage (CA) is a manufacturing business idea thatudassists organisations to be at benefits over rivals by keeping additional customers andudexhibiting superior trade levels. Literature on prioritising measures and resources withudrespect to their impacts on competitiveness is interesting, important, promising butudlimited. However, CA decisions are confronted with factors to be prioritised havingudunequal importance. Additionally, data may be scanty and uncertain but qualityuddecisions must be made. Furthermore, factors employed to judge the CA ability ofudorganisations are disjointed and limited and do not often account for environmentalfriendlinessudin frameworks. Consequently, a new environmentally set of measuresudshould be included in frameworks containing combined grey-TOPSIS and fuzzylogic.udUsing the resulting framework, a case study approach, based on expertudjudgement was adopted to exemplify and articulate the concept embedded in theudapproach. Study results indicate framework application feasibility and validity inudpackaging manufacturing. The novelties of the paper are: (i) development of audcomprehensive CA method using greenness factors; (ii) addition of a case-based CAudmethod for the Nigerian manufacturing environment; and (iii) application ofudcombined grey-TOPSIS-fuzzy-logic framework for CA. The presented frameworkudmay serve as an effective CA implementation tool
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