RYAM, formerly Rayonier Advanced Materials, traces its history to 1926, when the Rainier Pulp & Paper Company began operation in Washington State. In 1931, DuPont turned to Rayonier for a process to purify hemlock pulp for rayon, a partnership that fueled decades of growth. Today RYAM is a global leader in cellulose-based technologies, including high-purity cellulose specialties, with manufacturing operations in the United States, Canada and France.