EFCO Forms
- Commercial & Institutional Building Construction - 236220
- Highway, Street, and Bridge Construction - 237310
- Industrial Building Construction - 236210
- Mining Machinery and Equipment Manufacturing - 333131
- Oil and Gas Pipeline and Related Structures Construction - 237120
- Other Foundation, Structure, and Building Exterior Contractors - 238190
- Other Heavy and Civil Engineering Construction - 237990
- Poured Concrete Foundation and Structure Contractors - 238110
- Water and Sewer Line and Related Structures Construction - 237110