Since 1986, Service Express, a Grand Rapids based corporation, has been delivering on-site hardware maintenance for mission critical servers for dozens of clients across the East coast and Mid-west. Today, SEI maintains servers and mainframes for hospitals, manufacturing plants, universities, banks, Fortune 500 companies, financial institutions, government agencies and other mid to large companies in twelve states. Every year, SEI expands coverage territory to reach more customers with their brand of customer service and technical support.