A.Schulman Inc.; ACH Foam Technologies Inc.; Alpek S.A.B. de C.V; Americas Styrenics LLC; Atlas Roofing Corporation; Austrotherm GmbH; BASF SE; BEWiSynbra Group; Br?dr. Sunde as; Chi Mei Corporation; DowDuPont; DuPont de Nemours Inc.; ePS Designs; Flint Hills Resources; Formosa Chemicals & Fibre Corporation; Formosa Plastic Corporation; HIRSCH Servo etc.; INEOS Styrolution Group GmbH; Innova; KANEKA CORPORATION; Knauf Group; Kumho Petrochemicals Ltd.; LG Chem; Loyal Group?; NexKemia; NOVA Chemicals Corporation; Owens Corning Inc.; Penoplex SPB LLC?; Ravago Group?; SABIC; Saint-Gobain Isover SA