Npl

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

• Laboratories Medical
• Pipe Line Contractors

North American Industry Classification System (NAICS) Categories:

• Oil And Gas Pipeline And Related Structures Construction
• Medical Laboratories

Standard Industry Classification (SIC) Categories:

• Constructing Water, Sewer, Power, & Communication Lines And Pipelines > Pipe Line Contractors
• Medical Laboratories