Policies for Allocating Product Lots to Customer Orders in Semiconductor Manufacturing Supply Chains Yang Sun John W. Fowler * Dan L. Shunk Department of Industrial Engineering Arizona State University PO Box 875906 Tempe, AZ 85287-5906 USA * Corresponding author; email: John.Fowler@asu.edu; phone: +1 (480) 965-3727; fax: +1 (480) 965-8692. 1