Portfolio Companies | Past Companies
Since our founding in 1982, The Sterling Group has owned a wide variety of companies. Each one has contributed to our depth of experience. (Date is year of investment.)
- HydroChem Industrial Services (2003) - Provider of industrial cleaning services to a variety of process industries
- Exopack (2001) - Manufacturer of paper and plastic packaging
- AXIA (1998) - Manufacturer and distributor of niche construction tools, formed wire products, and industrial equipment
- Sterling Chemicals (1996/1986) - Producer of commodity petrochemicals and paper chemicals
- Sterling Diagnostic Imaging (1996) - Global supplier of products and services for the capture, communication, display, and archiving of diagnostic images
- Texas Petrochemical (1996) - Producer of petrochemicals including butadiene, butene-1, and MTBE
- Mail-Well (1994) - Manufacturer of specialized conventional envelopes and related packaging products
- Purina Mills (1993) - Manufacturer and marketer of animal nutrition products for cattle, hogs, horses, and zoo animals
- Royster-Clark (1992) - Marketer of fertilizer materials, micronutrients, animal feeds, and other farm supplies to farmers and related entities
- Arcadian Chemical (1989/1984) - Producer of nitrogen and phosphate agricultural fertilizers and industrial chemical products
- Craftworld International (1989) - Wholesale distributor of craft supplies
- CJC (1988) - Manufacturer and marketer of high-school rings and other personalized jewelry
- Fiber Industries (1988) - Manufacturer and marketer of polyester textile fiber products and bottle resins
- INDSPEC Chemical (1988) - Producer of resorcinol, a chemical used in the production of automotive tires, and other industrial chemicals
- Kranco (1988) - Manufacturer of overhead cranes
- Cain Chemical (1987) - Producer of ethylene and ethylene derivatives
- Sirena (1987) - Manufacturer and distributor of branded swimwear and lightweight leisurewear
- Airtron (1986) - Residential and light industrial heating and air-conditioning contractor
- Knox Lumber (1986) - Distributor and retailer of lumber, hardware, and related building materials
- A-1 Rental Car (1985) - Rental car franchise
- Hawkeye Chemical (1985) - Producer of nitrogen fertilizer and other related products
- Steffen Dairy (1985) - Processor of dairy foods
- Pawnee Industries (1984) - Manufacturer of custom-extruded plastic sheet materials
- Vista Chemical (1984) - Producer of commodity and specialty petrochemicals, including surfactants and PVC resins
- Balco International (1983) - Manufacturer of specialty architectural products