New orders for U.S. factory goods rebounded strongly in June on robust demand for transportation equipment and other goods, a hopeful sign for the struggling manufacturing sector. The Commerce Department said on Tuesday new orders for manufactured goods increased 1.8 percent after declining 1.1 percent in May. “We are moving past the very weak period for the manufacturing sector from early on this year, but that activity has yet to meaningfully increase,” said Daniel Silver, an economist at JPMorgan in New York.