Chen

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

• Sprinkler Automatic Fire
• Heating Contractors

North American Industry Classification System (NAICS) Categories:

• Plumbing, Heating, And Air-Conditioning Contractors > Heating Contractors
• Service Establishment Equipment And Supplies Merchant Wholesalers > Alarm & Sprinkler Systems & Supplies > Sprinkler Systems Fire

Standard Industry Classification (SIC) Categories:

• Plumbing, Heating And Air Conditioning > Heating Contractors
• Service Establishment Equipment And Supplies > Alarm & Sprinkler Systems & Supplies > Sprinkler Systems Fire