CRH plc, together with its subsidiaries, provides building materials solutions in Ireland and internationally. It operates through four segments: Americas Materials Solutions, Americas Building Solutions, Europe Materials Solutions, and Europe Building Solutions. The company provides solutions for the construction and maintenance of public infrastructure and commercial and residential buildings; and produces and sells aggregates, cement, readymixed concrete, and asphalt, as well as provides paving and construction services. It also manufactures, supplies, and delivers solutions for the built environment in communities across North America; and offers building and infrastructure solutions serving complex critical utility infrastructure, such as water, energy, transportation, and telecommunications projects, and outdoor living solutions for enhancing private and public spaces. In addition, the company combines materials, products, and services to produce a wide range of architectural and infrastructural solutions for use in the building and renovation of critical utility infrastructure, commercial and residential buildings, and outdoor living spaces for the built environment. Further, it produces and supplies precast and pre-stressed concrete products comprising floor and wall elements, beams, vaults, pipes, and manholes; granite, limestone, and sandstone; concrete and polymer-based products, such as underground vaults, drainage systems, utility enclosures, and modular precast structures; engineered steel, polymer-based anchoring, fixing, and connecting solutions; concrete masonry, hardscape and related products, including pavers, blocks and curbs, retaining walls, and slabs; and fencing and railing systems, composite decking, lawn and garden products, and packaged concrete mixes. The company was founded in 1936 and is headquartered in Dublin, Ireland.

Packaging Corporation of America manufactures and sells containerboard and corrugated packaging products in the United States. The company operates through three segments: Packaging, Paper, and Corporate and Other. The Packaging segment offers various containerboard and corrugated packaging products, such as conventional shipping containers used to protect and transport manufactured goods; multi-color boxes and displays that help to merchandise the packaged product in retail locations; and honeycomb protective packaging products, as well as packaging for meat, fresh fruit and vegetables, processed food, beverages, and other industrial and consumer products. This segment sells its corrugated products through a direct sales and marketing organization, independent brokers, and distribution partners. The Paper segment manufactures and sells commodity and specialty papers, as well as communication papers, including cut-size office papers, and printing and converting papers. This segment sells white papers through its sales and marketing organization. The Corporate and Other segment includes corporate support staff services and related assets and liabilities; and transportation assets, such as rail cars and trucks for transportation. Packaging Corporation of America was founded in 1867 and is headquartered in Lake Forest, Illinois.

Amcor plc develops, produces, and sells packaging products in Europe, North America, Latin America, and the Asia Pacific. The company operates in two segments, Flexibles and Rigid Packaging. The Flexibles segment offers flexible and film packaging products in the food and beverage, medical and pharmaceutical, fresh produce, snack food, personal care, and other industries. The Rigid Packaging segment provides rigid containers for various beverage and food products, including carbonated soft drinks, water, juices, sports drinks, milk-based beverages, spirits and beer, sauces, dressings, spreads, and personal care items; and plastic caps for various applications. It sells its products through its direct sales force. The company was incorporated in 1926 and is headquartered in Zurich, Switzerland.

Graphic Packaging Holding Company, together with its subsidiaries, designs, produces, and sells consumer packaging products to brands in food, beverage, foodservice, household, and other consumer products. It operates through three segments: Paperboard Manufacturing, Americas Paperboard Packaging, and Europe Paperboard Packaging. The company offers unbleached, bleached, and recycled paperboard to various paperboard packaging converters and brokers. It also provides paperboard packaging products for consumer packaged goods companies; and cups, lids, and food containers for foodservice companies and quick-service restaurants serving the food, beverage, and consumer product markets, including healthcare and beauty. The company also designs, manufactures, and installs specialized packaging machines. The company sells its products through sales offices, as well as through broker arrangements with third parties in the Americas, Europe, and the Asia Pacific. Graphic Packaging Holding Company was incorporated in 2007 and is headquartered in Atlanta, Georgia.

Sonoco Products Company, together with its subsidiaries, designs, develops, manufactures, and sells various engineered and sustainable packaging products in North and South America, Europe, Australia, and Asia. The company operates Consumer Packaging and Industrial Paper Packaging segments. The Consumer Packaging segment offers round and shaped rigid paper, steel, and plastic containers; metal and peelable membrane ends, closures, and components; thermoformed plastic trays and enclosures; and high-barrier flexible packaging products. The Industrial Paper Packaging segment provides paperboard tubes, cones, and cores; paper-based protective packaging products; and uncoated recycled paperboard products. It also offers various packaging materials, including plastic, paper, foam, and other specialty materials. Sonoco Products Company sells its products in various markets, which include paper, textile, film, food, packaging, construction, and wire and cable. The company was founded in 1899 and is headquartered in Hartsville, South Carolina.

Pactiv Evergreen Inc. manufactures and distributes fresh foodservice and food merchandising products, and fresh beverage cartons in the United States, rest of North America, and internationally. It operates in two segments, Foodservice, and Food and Beverage Merchandising. The Foodservice segment offers food containers; drinkware, such as hot and cold cups and lids; and tableware, service ware, and other products. The Food and Beverage Merchandising segment manufactures cartons for fresh refrigerated beverage products, including dairy, juice, and other specialty beverage; clear rigid-display containers, containers for prepared and ready-to-eat food, and trays for meat and poultry and egg cartons; fiber-based liquid packaging board; and supplies fresh carton systems comprises printed cartons, spouts, and filling machinery. It serves its products to full-service restaurants, quick service restaurants, foodservice distributors, supermarkets, grocery and healthy eating retailers, other food stores, food and beverage producers, and food packers and food processors. The company was formerly known as Reynolds Group Holdings Limited. The company was founded in 1880 and is headquartered in Lake Forest, Illinois. Pactiv Evergreen Inc. is a subsidiary of Packaging Finance Limited.

Greif, Inc. engages in the production and sale of industrial packaging products and services worldwide. The company operates through Global Industrial Packaging; Paper Packaging & Services; and Land Management segments. The Global Industrial Packaging segment produces and sells industrial packaging products, including steel, fiber, and plastic drums; rigid and flexible intermediate bulk containers; closure systems for industrial packaging products; transit protection products; water bottles, and remanufactured and reconditioned industrial containers; and various services, such as container life cycle management, filling, logistics, warehousing, and other packaging services to chemicals, paints and pigments, food and beverage, petroleum, industrial coatings, agriculture, pharmaceuticals, mineral product, and other industries. The Paper Packaging & Services segment produces and sells containerboards, corrugated sheets and containers, and other corrugated and specialty products to customers in the packaging, automotive, food, and building products markets; and produces and sells coated and uncoated recycled paperboard, and recycled fiber. This segment's corrugated container products are used to ship various products, such as home appliances, small machinery, grocery products, automotive components, books, and furniture, as well as various other applications. The Land Management segment engages in harvesting and regeneration of timber properties; and sale of timberland and special use properties. As of October 31, 2023, this segment owned approximately 175,000 acres of timber properties in the southeastern United States. The company was formerly known as Greif Bros. Corporation and changed its name to Greif, Inc. in 2001. Greif, Inc. was founded in 1877 and is headquartered in Delaware, Ohio.

WestRock Company, together with its subsidiaries, provides fiber-based paper and packaging solutions in North America, South America, Europe, Asia, and Australia. It operates through four segments: Corrugated Packaging, Consumer Packaging, Global Paper, and Distribution. The Corrugated Packaging segment produces containerboards, corrugated sheets, corrugated packaging, and preprinted linerboards to consumer and industrial products manufacturers, and corrugated box manufacturers. It also provides structural and graphic design, engineering services and custom, and proprietary and standard automated packaging machines; turn-key installation, automation, line integration, and packaging solutions; machinery solution that creates pouches; and pack temporary displays, as well as lithographic laminated packaging products. The Consumer Packaging segment manufactures and sells folding cartons that are used to package food, paper, beverages, dairy products, confectionery, health and beauty, and other household consumer products, as well as express mail packages for the overnight courier industry. It also offers inserts and labels, as well as rigid packaging and other printed packaging products, such as transaction cards, brochures, product literature, marketing materials, and grower tags, and plant stakes; and paperboard packaging for over-the-counter and prescription drugs. In addition, this segment manufactures and sells solid fiber and corrugated partitions, and die-cut paperboard components. The Global Paper segment manufactures containerboard, paperboard, and specialty grades primarily to corrugated packaging, folding carton, food service, liquid packaging, tobacco, and commercial print markets. The Distribution segment distributes corrugated packaging materials and other specialty packaging products, including stretch films, void fills, carton sealing tapes, and other specialty tapes; and provides contract packing services. The company is based in Atlanta, Georgia. As of July 5, 2024, WestRock Company operates as a subsidiary of Smurfit Kappa Group Plc.