REG Geismar Manufacturer REG Geismar Visit Website 36187 Hwy 30 Geismar, LA 70734 225-744-1300 About About REG Geismar, LLC is a commercial scale, state-of-the-art renewable hydrocarbon diesel production facility in Geismar, Louisiana. Ascension Chamber of Commerce 1006 W. Highway 30 Gonzales, LA 70737 Phone: (225) 647-7487 Fax: (225) 647-5124 info@ascensionchamber.com Quick Links Join the Chamber Members Benefits Events About Us News & Media Contact Us Resources © Copyright 2017. Ascension Chamber of Commerce. Website designed by dezinsINTERACTIVE