Complex sentence: Flintco was founded in 1908 as Tulsa Rig, Reel, and Manufacturing Company (TRR)-a major supplier of drilling and pumping equipment for the burgeoning oil industry.
Split into simpler sentences: Flintco was founded in 1908 as Tulsa Rig, Reel, and Manufacturing Company (TRR). It served as a supplier of drilling and pumping equipment for the burgeoning oil industry.