In what appears to be another salvo in the U.S. China trade war, the Commerce Department added chip maker Fujian Jinhua Integrated Circuit Co. to its export restriction list for national security reasons. In a statement, the Commerce Department said that Fujian Jinhua "is nearing completion of substantial production capacity for dynamic random access memory (DRAM) integrated circuits. The additional production, in light of the likely U.S.-origin technology, threatens the long term economic viability of U.S. suppliers of these essential components of U.S. military systems." Earlier in the year, the largest U.S. supplier of DRAM chips, Micron Technology Inc. MU, -0.66% , had some of its products blocked by a Chinese court, while Micron said it would take three or four quarters to adjust its supply chain to adjust to tariffs against China goods.