New Delhi, National Federation of Cooperative Sugar Factories (NFCSF) on Thursday welcomed the government's decision to allow 7 lakh tonne of excess B-heavy molasses as feedstock for ethanol production, saying it will not only help produce more ethanol but also improve finances of sugar mills. Sugar mills were holding excess stock of B-heavy molasses -- a byproduct of the sweetener -- produced before the ban on its use on December 7 last year.