Standardization
U.S. soybean futures, for example, are of standard grade if they are "GMO or a mixture of GMO and Non-GMO No. 2 yellow soybeans of Indiana, Ohio and Michigan origin produced in the U.S.A. (Non-screened, stored in silo)," and of deliverable grade if they are "GMO or a mixture of GMO and Non-GMO No. 2 yellow soybeans of Iowa, Illinois and Wisconsin origin produced in the U.S.A. (Non-screened, stored in silo)." Note the distinction between states, and the need to clearly mention their status as GMO (Genetically Modified Organism) which makes them unacceptable to most organic food buyers.
Similar specifications apply for cotton, orange juice, cocoa, sugar, wheat, corn, barley, pork bellies, milk, feedstuffs, fruits, vegetables, other grains, other beans, hay, other livestock, meats, poultry, eggs, or any other commodity which is so traded.
Standardization has also occurred technologically, as the use of the FIX Protocol by commodities exchanges has allowed trade messages to be sent, received and processed in the same format as stocks or equities. This process began in 2001 when the CME launched a FIX-compliant interface and has now been adopted by commodity exchanges around the world.
Read more about this topic: History Of Commodity Markets