| Allan Block -- Segmental retaining walls and mortarless fencing system. |
| Anchor -- Designer and licensor of retaining wall systems for large-scale shoreline, interstate, commercial, residential and do-it-yourself landscaping projects. |
| C-LOC -- Manufacturers of engineered vinyl sheet piling for erosion control and soil retention. |
| Geostone -- Supplier of retaining walls and segmental modular concrete blocks. |
| Geowestern -- Supplier of earth retention products including block retaining wall systems. |
| Gold-Joint Industry Co., Ltd. -- Producer and supplier of geo-grid and agricultural nets. |
| Hilfiker -- Designer and supplier of reinforced soil retaining wall systems. |
| Inter-Block -- Manufactures interlocking concrete blocks for the construction of gravity type retaining walls. |
| Keystone -- Offers a full line of retaining wall products, from small home landscaping units to structural units for commercial use. |
| Lokblok -- Manufactures a dry-stacked segmental interlocking retaining wall system. South Africa. |
| Materials International -- Manufactures vinyl decking and vinyl sheet piling. |
| Radial Block -- Concrete blocks for structrual and landscaping walls. |
| Redi-Rock International -- Manufacturer of large-scale retaining wall blocks. |
| Risi Stone -- Design, manufacture and construction of segmental retaining walls. |
| Rockwood -- Suppliers of concrete retaining wall units to form large, small, complex, tiered, curved and straight retaining walls. |
| Soil Retention -- Specializes in segmental retaining walls and erosion control development, block production and installation. |
| Stone Strong Systems -- Large-scale retaining wall system based on a 5,800lb main block that is 3' x 8' with a 24 sq. ft. face. |
| StoneWall Select -- Designers and licensors of stackable, mortarless retaining wall system. |
| Superior Piling -- Manufacturer of light weight steel piling. |
| Tenax -- Manufacturer and supplier of geo-grids, plastic nets and meshes. |
| Tensar Earth Technologies, Inc. -- Supply biaxial and uniaxial geo-grids for retaining walls, reinforced slopes, pavements, foundations, and other engineered earth technologies. |
| The Reinforced Earth Company -- Design and supply of retaining wall systems, noise barriers and precast arches. |
| VERSA-LOK -- Solid, pinned segmental retaining wall system. |
| Zeewall -- Producer of interlocking 'Z' shaped sheet piling made of PVC. |
