Albemarle Corporation Birla Carbon Chase Corporation Chem-Trend LP China MinMetals Corporation DDP Specialty Electronic Materials DuPont Elkem Materials Glassven Holland Colours H.M. Royal Inc. Lubrizol Martin Marietta Magnesia Specialties, LLC Norac Additives Nouryon Rain Carbon, Inc. Shiraishi Kogyo Kaisha, Ltd SI Group Solvay Specialty Polymers TC Transcontinental Packaging Tokuyama Corporation Toray International America, Inc. Wacker Chemical Corporation Zochem, Inc.