by Martin Crutsinger, The Associated Press Posted Mar 6, 2017 8:19 am MDT Last Updated Mar 6, 2017 at 2:20 pm MDT AddThis Sharing ButtonsShare to TwitterTwitterShare to FacebookFacebookShare to RedditRedditShare to 電子郵件Email US factory orders up 1.2 per cent in January WASHINGTON – U.S. businesses increased their orders in January, although a key component that tracks business investment spending fell for the first time in four months.Factory orders rose 1.2 per cent, led by a jump in demand for aircraft, the Commerce Department reported Monday. Orders had risen 1.3 per cent in December.A category that serves as a proxy for business investment edged down 0.1 per cent in January after three months of solid gains. It was the first setback since a 1.5 per cent decline in the category in September.American manufacturing has been under stress for nearly two years as a strong dollar cut into export sales and a big plunge in oil prices triggered cutbacks by energy companies. Manufacturers are expected to see stronger sales in 2017.Demand for durable goods, items ranging from bicycles to battleships that are expected to last at least three years, rose 2 per cent. That was even better than the initial estimate of a 1.8 per cent gain made in an advance report on Feb. 27. Demand for nondurable goods, everything from paper products to chemicals and food, rose 0.4 per cent in January after a 3.4 per cent jump in December.The strength in January reflected a surge in orders for commercial aircraft, which jumped 69.8 per cent, and a 62.2 0ercent rise in orders for military aircraft. Demand for motor vehicles and parts rose 0.8 per cent, while orders for ships and boats fell 33.7 per cent.Orders for machinery rose 0.9 per cent. Demand for primary metals such as iron, steel and aluminum fell 1.5 per cent.Manufacturing firms have struggled since 2015 with a rising value of the dollar, which makes exports more expensive in foreign markets, and a plunge in oil prices which triggered big reductions in investment by U.S. energy companies.But economists are hopeful that energy investment will begin rising now that oil prices are rebounding, and they believe export demand should also improve now that the dollar has stabilized.