Road Science is the only chemical supplier of asphalt additives and emulsifiers with an AASHTO accredited laboratory, having originally achieved accreditation in 2001.(PRWeb February 28, 2019)Read the full story at https://www.prweb.com/releases/road_science_confirms_compliance_with_american_association_of_state_highway_and_transportation_officials_accreditation_program/prweb16131685.htm