Rayonier Advanced Materials is an American chemical company specializing in cellulose-based products. Headquartered in Jacksonville, Florida, it produces more than 25 grades of high-purity performance fibers for products ranging from food, cosmetics, and pharmaceuticals to paints, filters, impact-resistant plastics, and digital display screens. In 2014, Rayonier and Rayonier Advanced Materials split into separate companies. Rayonier retained the real estate and forest resource components while Rayonier Advanced Materials took over management of the performance fibers division. Rayonier Advanced Materials roots are traced back to 1926 with the founding of Rainier Pulp and Paper Company in San Francisco, California. Its first mill opened the next year in Shelton, Washington, and Port Angeles on the Olympic Peninsula. The mill used Tsuga heterophylla (western hemlock) trees to create a premium bleached paper pulp. In 1931, Rainier Pulp and Paper began working with the Du Pont chemical company to produce hemlock pulp for the manufacture of rayon. Two additional pulp mills were constructed and began operation in the state of Washington. Rainier Pulp and Paper changed its name to Rayonier, a portmanteau of the words, "rayon" and "Rainier", in 1937, when it became a publicly traded company. The following year, the company acquired timber stands in the southeastern United States and began construction of a Fernandina Beach, Florida, pulp mill, which began production in 1939. In 1944, the company moved its offices to New York City. As World War II ended, Rayonier began making large land purchases in the Pacific Northwest. The Rayonier Foundation was created in 1952 to provide assistance to charitable, civic and education organizations in the communities where Rayonier did business. Rayonier opened international sales offices in Europe and Asia during 1954. That same year, another pulp mill in the southeast was constructed at Jesup, Georgia. High demand prompted the facility to double its capacity by 1957.