Industrial chemicals; chemicals derived from petroleum, namely, ethanol, alkanes and olefins; chemicals for use in the oil industry; chemicals for use in the oil refining industry; chemicals for use in the petrochemical industry; chemicals for use in the refining of oils; chemicals for use in the treatment of oils; chemical products for use in the field of oil production, namely, the manufacture of oils; chemicals derived from natural gas, namely, methanol and ethanol; alkanes and olefins for...