Quadrant is the world's largest manufacturer of engineering plastic machining stock. Our newly introduced Extreme Materials portfolio includes several brand new materials for CMP and Test segments. These new materials were designed to meet the changing needs for machined plastic parts in the semicon industry. Key applications in CMP, Test and Etch areas continue to broaden our product range. Quadrant is the exclusive manufacturer of Ertalyte PET-P, Ketron PEEK, Semitron ESd materials, Techtron PPS and Torlon PAI.