First Defense Ind

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

• Water Filtration & Purification Equipment

North American Industry Classification System (NAICS) Categories:

• Other Building Material Dealers > Water Filters & Purification Equipment

Standard Industry Classification (SIC) Categories:

• Plumbing And Heating Equipment And Supplies (Hydronics) > Water Filters & Purification Equipment