The retailer will also be promoting a new " green supply chain initiative " being led by the Environmental Defense Fund ( EDF ), a non-profit group that has worked with Wal-Mart on sustainability issues in the US. 这家零售商还将推动由美国环保协会(environmentaldefensefund)牵头的新一轮“绿色供应链行动”(greensupplychaininitiative)。