21 Audio

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

• Auto Radio & Stereo System Sales & Repair

North American Industry Classification System (NAICS) Categories:

• Automotive Parts And Accessories Stores > Radar, Radio & Stereo Systems > Automotive Radios & Stereo Systems
• Consumer Electronics Repair And Maintenance > Auto Radio & Stereo System Repair

Standard Industry Classification (SIC) Categories:

• Radio, Television, And Consumer Electronics Stores > Radio, Television & Electronic Stores, Nec > Automotive Radios & Stereo Systems
• Radio And Television Repair Shops > Radio Communications Equipment Repair > Auto Radio & Stereo System Repair