cProductInfo keeps a directory of where product information is for each
barcode. You only have to know one web address to find the information for
almost any product: http://www.cProductInfo.com/directory.asp. The directory's address will remain the
same, however, we will move product information to different locations. Before
re-using an old product link, you should always check the directory first.
The directory accepts a Directory Request and returns a Directory Reply.