Since our founding in 1982, The Sterling Group has focused on industrial companies.  Each one has contributed to our depth of experience.

  • Headquartered in Waco, Texas, Time Manufacturing is a global designer, manufacturer, and distributor of vehicle-mounted aerial lifts primarily for the telecom and electric utility end markets. These lifts are marketed under several brand names, primarily Versalift. The company is held in Fund IV.

  • The Construction Supply platform is a national leader in the distribution of construction materials, accessories and tools, primarily for professional concrete and masonry contractors in the United States and Canada. Formed through the combination of Brock White and Border, the company has 73 branches with 1,150 employees and offer over 70,000 SKUs for nearly 25,000 customers. The company is held in Fund IV.

  • Lynx FBO Network provides fuel, ramp and other services to the general aviation industry. Lynx currently has locations in Little Rock, Arkansas, Anoka, Minnesota, Destin, Florida and Aurora, Oregon. The company is held in Fund IV.

  • Evergreen North America Industrial Services is a leading provider of industrial cleaning and related specialty cleaning services to a diverse set of end markets in the United States, including Refining, Power Generation, Petrochemical, Manufacturing, Mining, Waste to Energy, and Paper. Evergreen North America was formed through the simultaneous acquisitions of the two legacy businesses, North American Industrial Services and Evergreen Industrial Services in June 2016. The company is held in Fund IV.

  • Highline Aftermarket is a manufacturer and distributor of packaged automotive chemicals, lubricants, and parts, which it sells to independent distributors, quick lube shops, jobbers, wholesalers, and multiple retail channels. Highline Aftermarket was formed through the simultaneous acquisitions of the two legacy businesses, DYK Automotive and Auto Aftermarket Holdings Corporation in April 2016. The company is held in Fund III.

  • Headquartered in Birmingham, Alabama, ProcessBarron is a leading provider of custom turn-key air and material handling solutions to a variety of industries including utility providers and pulp, paperboard, metals and cement producers. The company designs, engineers, fabricates, installs, maintains and repairs equipment critical in powering industrial plants in a variety of end markets. ProcessBarron is held in Fund III.

  • Headquartered in Buffalo, New York, Specified Air Solutions designs and manufactures specialty commercial and industrial HVAC equipment as well as industrial process and finishing equipment. The company’s diverse product offering is utilized in a range of niche market applications, primarily in manufacturing facilities, warehouses, vehicle service shops, educational facilities, commercial offices, energy terminals, chicken houses and retail establishments. Specified Air is held in Fund III.

  • Headquartered in Detroit, Michigan, DexKo Global is a leading designer and manufacturer of trailer axle, brake and suspension assemblies and related replacement parts used primarily in the industrial and utility trailer and RV markets in North America. DexKo Global is held in Fund III and Fund IV.

  • Saxco, headquartered in Horsham, PA, is the leading value-added distributor of rigid packaging products for the wine, spirits and craft beer markets in North America. With an operating history that spans more than seven decades, the company distributes glass bottles and other packaging products to a customer base of more than 2,000 wineries, distillers, brewers and specialty food manufacturers. These customers depend on Saxco to provide access to a broad selection of packaging products and services from a single-source at a lower total cost than they could achieve by buying direct from packaging and bottle manufacturers. The company has a broad network of sales offices and distribution facilities across the US, Canada and select international locations. The Saxco investment is held in Fund III.


Past Portfolio

(Date is year of investment.)
Safe Fleet (2013)

Provider of safety-and productivity-oriented components to the emergency vehicle, truck and trailer, utility vehicle, school bus, and transit bus end markets.


Manufacturer and erector of factory coated metal storage tanks.

American Bath Group (2014)

Manufacturer of bathtubs and showers primarily used in residential single family and multi-family housing markets.

Liqui-Box (2011)

A supplier of bag-in-box flexible packaging to the global dairy, beverage and bulk food markets.

B&G Crane (2010)

Specializes in providing fully operated and maintained crane services, heavy rigging and specialty hauling services in the Louisiana Gulf Coast region.

Express (2010)

Manufacturer engaged in the engineering, design and fabrication of heat transfer, environmental compliance, and sound suppression equipment.

Stackpole International (2011)

A manufacturer and sole source supplier of highly-engineered oil pumps and powdered metal components to automotive original equipment manufacturers.

Velcon Filters, LLC (Velcon) (2009)

A niche manufacturer of fluid filtration systems for a variety of domestic and international end markets, including jet fuel.

Universal Fiber Systems (2007)

A leading niche manufacturer of high-performance, specialty synthetic fibers for niche segments of the commercial carpet, transportation carpet, and specialty textile industries.

Roofing Supply Group (RSG) (2006)

One of the largest wholesale distributors of roofing supplies and related materials in the United States.

BTEC Turbines (2006)

Provider of services and equipment to the power industry.

Hudson Products (2006)

Global manufacturer of air cooled heat exchangers and axial flow fans.

Panolam Industries (2005)

Manufacturer of decorative laminate panels for residential / commercial indoor surfacing applications.

Propex (2004)

Producer of carpet backing, geosynthetic, concrete, furnishing, and industrial fabrics and fibers.

North American Energy Partners (NAEP) (2003)

NAEP is the leading provider of site preparation, mining and other services in the Alberta Oil Sands and Western Canada.

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

Texas Petrochemical (1996)

Producer of petrochemicals including butadiene, butene-1, and MTBE

Mail-Well (1994)

Manufacturer of specialized conventional envelopes and related packaging products

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

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

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