North American-based manufacturers of semiconductor equipment posted $1.71 billion in orders in January 2007 (three-month average basis) and a book-to-bill ratio of 1.06 according to the January 2007 Book-to-Bill Report published today by SEMI. A book-to-bill of 1.06 means that $106 worth of orders were received for every $100 of product billed for the month. The three-month average of worldwide bookings in January 2007 was $1.71 billion. The bookings figure is about 14 percent higher than the final December 2006 level of $1.50 billion and about 39 percent above the $1.23 billion in orders posted in January 2006. The three-month average of worldwide billings in January 2007 was $1.62 billion. The billings figure is about nine percent higher than the final December 2006 level of $1.48 billion and over 28 percent higher than the January 2006 billings level of $1.26 billion.