SummaryShipping firms, port operators, retailers welcome progress Industry experts say 30% tariffs remain a risk for US consumers Shipping rates could rise with a cargo rush BERLIN/LOS ANGELES, May 12 (Reuters) - The container shipping industry on Monday welcomed an agreement between the United States and China to temporarily slash punishing tariffs, saying it expected to be buoyed by a resulting recovery in bookings from China to the U.S.The United States will cut extra tariffs it imposed on Chinese imports in April to 30% from 145% and Chinese duties on U.S. imports will fall to 10% from 125% for the...