BASF SE
Dairen Chemical Corporation
Nynas AB
Ergon Inc. Valvoline
PetroChina Company Ltd
Sinopec Corporation and Cargill Inc. among several others such as Calumet Specialty Products
Engen Petroleum Ltd. Hydrodec Group Plc
Royal Dutch Shell
Hyrax Oil Sdn Bhd
Eden Oil
Emirates Lube Oil Company and Electrical Oil Services.