System4

System4 is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Carpet Rug & Upholstery Cleaners
• Cleaning Service
• Janitorial Services
• Window Cleaning

North American Industry Classification System (NAICS) Categories:

• Janitorial Services > Janitorial Services By Name
• Carpet And Upholstery Cleaning Services
• Other Services To Buildings And Dwellings > Window & Blind Cleaning > Window Cleaning
• Other Services To Buildings And Dwellings > Cleaning Services
• Commercial And Industrial Machinery And Equipment (Except Automotive And Electronic) Repair And Maintenance > Cleaning Services

Standard Industry Classification (SIC) Categories:

• Carpet & Upholstery Cleaning
• Building Cleaning & Maintenance Services, Nec > Window & Blind Cleaning > Window Cleaning
• Building Cleaning & Maintenance Services, Nec > Janitorial Services
• Repair Shops And Related Services, Nec > Cleaning Services