GXT Green, Incorporated Share: MANUFACTURING-GREEN CONSULTING GXT Green, Incorporated Visit Website 505 Middlesex Turnpike, Suite 11 Billerica, MA 01821 (978) 735-4367 (978) 735-4368 (fax) Facebook Twitter Rep Info Map Whom to Contact Michael Vanin COO Phone: (978) 735-4367 Send an Email What's Nearby? Distance: 5 10 15 20 25 50 mi.