Chemical preparations, products, substances and compositions, all for use in oil fields, gas fields, oil production or gas production; chemical preparations, products, substances and compositions, all for use in drilling, completion and workover of oil and gas wells; chemical substances, preparations and compositions, all for use in drillings; additives for use in drilling, completion and workover of oil and gas wells; completion fluids, drilling muds, drilling fluids and viscosifiers, all for use in the drilling, completion and workover of oil and gas wells; none of the aforesaid goods being adhesives.;
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