Read more about Birla Cellulose s Grasim Vilayat site attains EU BAT compliances on Business Standard. Birla Cellulose s Grasim Cellulosic division in Vilayat, Gujarat commissioned a carbon-disulphide adsorption plant, achieving stringent level of sulphur-to-air emission norms stipulated in the EU BAT references for the viscose manufacturing process.