Numbers released by Panjiva, a firm that tracks overseas suppliers, show an uptick of 2% in the number of global manufacturers shipping to the U.S. market in May. It is the third monthly increase in a row.

The firm reports a metric that tracks manufacturers that have suffered a 50% or greater decline in volume shipped to U.S. customers in the most recent three-month period, versus the same period a year ago. These manufacturers are on the Panjiva Watch List. “Significant manufacturers” are those that have shipped 10 or more shipments to the U.S. over the past year. “Significant buyers” are those that have received 10 or more shipments from overseas manufacturers in the past year.

According to Panjiva, the number of …