Organization Services

Founded in 1988, Marking Services Incorporated (MSI) is a U.S.-based specialty contractor headquartered in Milwaukee, Wisconsin. MSI engineers, manufactures, and installs comprehensive identification systems—primarily pipe markers, valve tags, equipment labels, and in-plant signage—for major industrial and construction projects. Serving industries such as oil & gas, power generation, healthcare, commercial buildings, and technology facilities, the firm operates both “contractor services” and full-service turnkey divisions, offering technical drafting, material take-off, fabrication, and on-site installation.With approximately 250 employees and annual revenues around $60–70 million, MSI supports client operations through facilities in Milwaukee, Houston, Canada, Singapore, Abu Dhabi, Qatar, Korea, and Brazil.