H.A. Thompson & Sons

H.A. Thompson & Sons is also listed under the following categories: Standard Yellow Pages Heading (SYPH) Categories:

• Control Systems & Regulators
• Plumbing & Heating Contractors

North American Industry Classification System (NAICS) Categories:

• Plumbing, Heating, And Air-Conditioning Contractors > Plumbing Contractors > Plumbing & Heating Contractors
• Electrical Apparatus And Equipment, Wiring Supplies, And Related Equipment Merchant Wholesalers > Electrical Control Systems & Materials > Control Systems & Regulators

Standard Industry Classification (SIC) Categories:

• Plumbing, Heating And Air Conditioning > Plumbing Contractors > Plumbing & Heating Contractors
• Electrical Apparatus & Equipment > Electrical Control Systems & Materials > Control Systems & Regulators