GSO Celebrates International Parcel Day with Parent Company, The GLS Group.

SAN RAMON, Calif., May 29, 2018 /PRNewswire/ -- As part of the GLS Group, GSO took part in its first ever International Parcel Day, which was launched by GLS in 2015 as a day to do something positive for the community while placing a face behind the industry.  "Transporting packages is par...