All items to be sold, including custom forms, stock forms, ad specialties, and services, are stored in a central products and services data file. Each ‘form’ is defined by a number of attributes: Is it a product or a service? Stock or custom? Warehoused item? What type of product is it? Is it strictly used by a single customer? Location? And so forth. You can attach a printer specification to the item which is printed along with purchase orders and RFQs to the vendor.