Marking Services, also known as MSI, designs, manufactures and installs pipe identification and valve tagging systems. It provides markers, tags, tapes and signs for the manufacturing, pharmaceutical, power, refrigeration, petroleum and paper industries. Its signs are also an integral part of marine and offshore operations. The company s safety and operational signs are available in white, yellow, blue, red, green and black colors. Additionally, the company manages a specialized engineering team that is trained in the intricacies of developing and implementing total mechanical identification systems. Headquartered in Milwaukee, the company operates facilities in Texas, Delaware and Washington. The company also maintains facilities in Canada and Singapore.