2        Dun's SIC 2+2, Dun & Bradstreet
3        Empty Non-hazardous Last Contained (HMRC) Code
A        Harmonized Tariff Schedule of the United States Annotated
B        U.S. Foreign Trade Schedule B, Statistical Classification of Domestic and 
         Foreign Commodities Exported from the United States
C        Canadian Freight Classification
D        Department of Defense Unique Codes
E        Coordinated Motor Freight Classification
F        National Stock Number
G        Canadian Wheat Board, Grain Code for Terminal Elevator Accounting
H        Brussels Nomenclature
I        Milstamp AITC or Water Commodity Code
J        Harmonized System-Based Schedule B
K        Federal Supply Classification
L        Last Contained Contents STCC
M        Dun & Bradstreet Standard Product and Service Code
N        National Motor Freight Classification (NMFC)
P        Bulk Petroleum Codes
Q        Quota Category
S        Standard International Trade Classification (SITC)
T        Standard Transportation Commodity Code (STCC)
U        Uniform Freight Classification (UFC)
V        Standard Industrial Classification (SIC) Code
Z        Mutually defined