SIKA AG, NYNAS AB, TOTAL S.A., ROYAL DUTCH SHELL PLC, COLAS S.A., HINDUSTAN COLAS PRIVATE LIMITED, SOPREMA GROUP, THE DOW CHEMICAL COMPANY, GAF MATERIALS CORPORATION, GAZPROM NEFT PJSC, PJSC ROSNEFT OIL COMPANY, SAINT-GOBAIN WEBER, ORLEN ASFALT SP. Z.O.O., EXXONMOBIL CORPORATION, W.R.GRACE AND COMPANY, FIRESTONE BUILDING PRODUCTS COMPANY, FOSROC INTERNATIONAL LIMITED, LAGAN ASPHALT GROUP, BITUMINA GROUP, GLOBAL ROAD TECHNOLOGY, TEXSA SYSTEMS SLU