The United States on Wednesday said it would examine whether hardwood plywood imports completed in Vietnam using Chinese components are circumventing U.S. duties on imports from China, a move that could see similar duties on Vietnamese imports.  The U.S. Commerce Department said it was initiating the inquiries in response to requests from the Coalition for Fair Trade in Hardwood Plywood, which represents plywood makers in North Carolina and Oregon.  If the probe shows Vietnamese producers are circumventing existing anti-dumping or countervailing duties, Commerce said it would instruct U.S. Customs officials to begin ...