A large minority of some of the highest-volumernpetroleum marketers in the country last year activelyrntraded renewable fuels blending credits known asrnRenewable Identification Numbers (RIN).rnNearly 40% of SIGMA members took title tornand/or sold RINs in 2014, the trade group said in itsrn“SIGMA Statistical Report 2015,” which analyzedrndata from last year.
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