MRO : MRO, which stands for Maintenance Repair and Operations is a term used for all production-related materials with the exception of the raw material itself. Although it is not directly used to produce the final product, MRO ranges from facilities, maintenance and repairs to consumables such as stationery and cleaning material. For example, stationery such as copy paper, printer toner, pencils; electricity or electronic products such as electric cables, lubricants and gas; machinery parts such as bolts and bearings are all MRO items.