MRO Supplies are a type of work-in-progress, or inventory, that are used in day-to-day business operations. MRO stands for Maintenance, Repair and Operations, and it’s an essential part of any successful business. MRO supplies encompass all items necessary to maintain the smooth functioning of a workplace, ranging from lubricants and adhesives to cleaning supplies and safety equipment. Without them, a business can’t function properly and efficiently. In other words, MRO supplies help keep operations running smoothly – making them an invaluable asset.