IPC- International Association Connecting Electronics Industries ® recently released "Statistical Report December PCB industry research in North America." The report shows that December sales and orders were flat with the same period in 2013, but the book to bill ratio of good performance in the fourth quarter of 2015 sales was a positive signal.December 2014 the total PCB shipments, compared with the same period last year, an increase of 3.4%, pushing YTD shipments improved to -0.8%. Compared with the previous month, PCB total shipments, growth of 6.4%. Compared to last year, December PCB total orders rose by 7.9%, so that further orders so far this year to 0.6 percent growth. Compared with the previous month, orders in December, the chain increased 13.4%.North American PCB book to bill ratio, a strong increase to 1.07 in December.Ms. SharonStarr IPC director of market research, said: "2014 North American PCB business, compared with 2013, the overall flat .2014 annual sales of less than one percentage point behind in 2013, however, orders 0.6 percentage points higher than last year's gratifying. is the book to bill ratio for the fourth quarter strong performance can be expected sales in 2015 will be a good performance. "