yellow tick  Classification Codes

Group #455 Plumbing & Heating Industries of NY State

5183 - Plumbing NOC
5184 - Insulation
5188 - Sprinkler Systems
5193 - Oil/Gas Burner Installation, Service, Repair
5536 - HVAC Systems Installation incl ductwork
5538 - Sheet Metal Work - Erection
8111 - Plumbing Supply Dealer
8350 - Fuel Oil Dealer
3726 - Boiler Installation/Service/ Repair

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