NAICS Code 42 Companies ... NAICS Code 423 Companies ... NAICS Code 4237 Companies ... NAICS Code 42372 Companies ... NAICS Code 423720 Companies
Plumbing and Heating Equipment and Supplies (Hydronics) Merchant Wholesalers
This industry comprises establishments primarily engaged in the merchant wholesale distribution of plumbing equipment, hydronic heating equipment, household-type water heaters, and/or supplies.
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