This proposed rule will designate, for preferred procurement under the Federal Biobased Products Preferred Procurement Program, approximately eight complex assembly product categories. A complex assembly is defined by the BioPreferred program as a system of distinct materials and components assembled to create a finished product with specific functional intent where some or all of the system inputs contain some amount of biobased material or feedstock. Typical complex assembly product categories will include products such as upholstered office chairs and other office furniture; mattresses; backpacks; boots; and other camping gear. The specific product categories to be included in this rulemaking are under investigation by the Office of Procurement and Property Management, but technical information is expected to be available to support the designation of about eight product categories.