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CARBO Ceramics Inc., a technology company, provides products and services to the oil and gas, industrial, and environmental markets worldwide. It operates through two segments, Oilfield and Industrial Technologies and Services, and Environmental Technologies and Services. The Oilfield and Industrial Technologies and Services segment manufactures and sells oilfield ceramic technology products, base ceramic proppants, and frac sand proppants to pressure pumping companies, and oil and gas operators for use in the hydraulic fracturing of natural gas and oil wells. It also provides technology to design, build, and optimize the Frac; sells fracture stimulation software under the FracPro brand; and offers fracture design and consulting services to oil and natural gas exploration and production companies under the StrataGen brand name. The Environmental Technologies and Services segment provides spill prevention, containment, and countermeasure systems for the oil and gas industry. CARBO Ceramics Inc. was founded in 1987 and is headquartered in Houston, Texas.

Powin Energy Corporation designs, develops, manufactures, and provides integrated battery energy storage systems for utility-scale, commercial and industrial, and microgrid applications. Its primary product is the Stack140, a modular, flexible, purpose-built battery string that is scalable from a single unit to multiple megawatts of capacity. The company was founded in 1989 and is headquartered in Tualatin, Oregon.

Rosehill Resources Inc., an independent oil and natural gas company, focuses on the acquisition, exploration, development, and production of unconventional oil and associated liquids-rich natural gas reserves in the Permian Basin. As of December 31, 2018, its portfolio included 67 gross operated producing horizontal wells in the Northern Delaware Basin and 4 gross operated producing horizontal wells in the Southern Delaware Basin; and working interests in approximately 6,665 gross acres in the Northern Delaware Basin and 9,219 gross acres in the Southern Delaware Basin, as well as 513 gross operated and 53 non-operated potential horizontal drilling locations in the Northern and Southern Delaware Basin. The company was founded in 2015 and is headquartered in Houston, Texas. Rosehill Resources Inc. is a subsidiary of Tema Oil & Gas Company.

Emeren Group Ltd, through its subsidiaries, develops, builds, operates, and sells solar power projects. It owns and operates 3 gigawatt pipeline of projects and independent power producer assets. The company also develops community solar gardens; and sells project rights. In addition, it engages in engineering design; procurement of solar modules; balance-of-system components and other components; and construction contracting and management services. Further, the company generates and sells electricity. It operates in China, United States, UK, Spain, France, Poland, Italy, Hungary, and Internationally. The company was formerly known as ReneSola Ltd and changed its name to Emeren Group Ltd in January 2023. Emeren Group Ltd was founded in 2005 and is headquartered in Stamford, Connecticut.