UPS (United Parcel Service) is a company providing multinational package delivery services and supply chain management solutions. It operates through three segments: U.S. Domestic Package, International Package, and Supply Chain & Freight. The U.S. Domestic Package segment offers time-definite delivery of letters, documents, small packages, and palletized freight. The International Package segment delivers guaranteed day and time-definite international shipping services. The Supply Chain & Freight segment provides international air and ocean freight forwarding, customs and truckload freight brokerage, distribution and post-sales, and mail and consulting services.