90658986
Apr 20, 2021
Chemical additives for drilling muds; Chemical additives for fracturing fluid for use in oil and gas wells; Chemical additives for oil well drilling fluids; Chemical preparations for use in industry; Chemicals used in oil drilling; Chemicals for use in decontamination of polluted sites; Chemicals for use in the field of oil exploration and production; Chemicals for the treatment of water and wastewater; Industrial chemicals; Waste water treatment chemicals for industrial use
Chemicals