Ceramic pellets, shots, or spheres for use as a gravel pack material for sand control operations

Gas chromatography and liquid chromatography instruments and supplies, namely columns for chromatography

resin coated proppant for use in oil well and gas well hydraulic fracturing operations

Gas chromatography and liquid chromatography instruments and supplies, namely columns for chromatography

polymers for use in the manufacturing of adhesives, caulks and sealants

TREADING STOCK