How are business markets segmented?

"Business markets are segmented differently than consumer markets. Business markets may segment based on geography, volume, and benefits, just as consumer markets are. However, organizations might also segment based on use of the product (such as a petrochemical company having one market segment for purchasers who use polyethylene for instrumentation panels and one for purchasers who use polyethylene for car seats), characteristics of purchasing function (such as purchasing committees, purchasing managers, or purchasing departments), size of the client (one segment for large customers who have different needs than smaller customers), or industry (such as segmenting food systems into restaurants or government agencies such as schools or military bases), as well as other considerations related to characteristics of business customers."