National Ramp National Ramp is a manufacturer and supplier of ramps for residential and commercial sectors. | ![]() Cornerstone Building Brands Cornerstone Building Brands (formerly known as NCI Building Systems) is a company that manufactures exterior building products for commercial, residential, repair, and remodel construction sectors. | CertainTeed CertainTeed is a company that designs and manufactures exterior and interior building materials. | ![]() Cleveland-Cliffs Steel Cleveland-Cliffs Steel (formerly known as AK Steel) is a manufacturer of steel products. | ![]() JFE Shoji JFE Shoji (ジェイエフイーショウジ, formerly JFE Shoji Trade) is a company that manufactures steel products. | |
Founding Date | Founding Date 2005 | Founding Date 1991 | Founding Date 1904 | Founding Date 1989 | Founding Date 1954 |
Type | Type Private | Type Private | Type Subsidiary | Type Subsidiary | Type Subsidiary |
Tags | |||||
Locations | Locations HQ | Locations Cary, US HQ | Locations Malvern, US HQ Montreal, CA Vaughan, CA Athens, US Berlin, US Carrollton, US Chowchilla, US see more | Locations West Chester, US HQ Butler, US Coshocton, US Dearborn, US Mansfield, US Middletown, US Rockport, US see more | Locations Tokyo, JP HQ Brisbane City, AU Sydney, AU West Perth, AU Rio De Janeiro, BR Sao Paulo, BR Beijing, CN see more |
Employees | Employees 462% decrease | Employees 18,000 | Employees 6,300 | Employees 6,200 | Employees 8,618 |
Financial | |||||
Revenue (est.) | Revenue (est.) N/A | Revenue (est.) $5.4b (FY, 2025) | Revenue (est.) N/A | Revenue (est.) N/A | Revenue (est.) ¥1.4t (FY, 2025) |
Operating ⚠ | |||||
Manufacturing Facilities | Manufacturing Facilities N/A | Manufacturing Facilities 107 (FY, 2021) | Manufacturing Facilities 60 (Sep, 2023) | Manufacturing Facilities N/A | Manufacturing Facilities N/A |

Cornerstone Building Brands (formerly known as NCI Building Systems) is a company that manufactures exterior building products for commercial, residential, repair, and remodel construction sectors.
View companyCertainTeed is a company that designs and manufactures exterior and interior building materials.
View company
Cleveland-Cliffs Steel (formerly known as AK Steel) is a manufacturer of steel products.
View company
JFE Shoji (ジェイエフイーショウジ, formerly JFE Shoji Trade) is a company that manufactures steel products.
View company