Many companies use these electronic tags to follow products through the supply chain from the manufacturer.

VOA: special.2010.03.01

The entire supply chain can be affected, from farmers to wholesalers to merchants selling rice in local markets.

VOA: standard.2010.04.29

And so we trust the supply chain to deliver the right product."

VOA: standard.2010.06.07

On the other hand Wal-Mart has gone through a tremendous effort over the last couple of years to integrate environmental sustainability into not only its own practices but to force this into the supply chain."

VOA: standard.2010.01.23