AptarGroup, Inc. provides a range of dispensing, sealing, and material science solutions primarily for the beauty, personal care, home care, prescription drug, consumer health care, injectable, and food and beverage markets.

Silgan Holdings Inc., together with its subsidiaries, manufactures and sells rigid packaging for consumer goods products in North America, Europe, and internationally.

RPM International Inc. manufactures, markets, and sells specialty chemicals for the industrial, specialty, and consumer markets worldwide. It offers waterproofing, coating, and institutional roofing systems; sealants, air barriers, tapes, and foams; residential home weatherization systems; roofing and building maintenance services; sealing and bonding, subfloor preparation, flooring, and glazing solutions; resin flooring systems, polyurethane, MMA waterproof, epoxy floor paint and coatings, concrete repair, and protection products; solutions for fire stopping and intumescent steel coating, and manufacturing industry; rolled asphalt roofing materials and chemical admixtures; concrete and masonry admixtures, concrete fibers, curing and sealing compounds, structural grouts and mortars, epoxy adhesives, injection resins, polyurethane foams, floor hardeners and toppings, joint fillers, industrial and architectural coatings, decorative color/stains/stamps, and restoration materials; insulated building cladding materials; and concrete form wall systems.

Packaging Corporation of America manufactures and sells containerboard and corrugated packaging products in the United States. The company operates through Packaging and Paper segments.

Stepan Company, together with its subsidiaries, produces and sells specialty and intermediate chemicals to other manufacturers for use in various end products.