Rigid PCB shipments were up 24.3 percent while bookings increased 22.1 percent in August 2010 from August 2009. Year to date, rigid PCB shipments were up 20.4 percent and bookings have grown 33.2 percent. Compared to the previous month, rigid PCB shipments increased 5.4 percent and rigid bookings increased 1.5 percent. The book-to-bill ratio for the North American rigid PCB industry in August 2010 remained positive, but fell off slightly to 1.08.