DATAMARK, Inc. leased an office suite in Harrisburg. DATAMARK, Inc. is a leading business process outsourcing (BPO) company headquartered in El Paso, Texas. They provide a wide range of outsourced back-office services, including call center services; high-volume digital mailroom and mail center management; and data entry, document processing and document management. The Bill Gladstone Group of NAI CIR handled the transaction.