noun
related tradespeople; affiliated contractors
Refers to businesses or tradespeople connected to a particular industry or project, such as subcontractors, suppliers, or service providers.
この工事には多くの関連業者が関わっている。
Many related tradespeople are involved in this construction project.
関連業者との連絡を密にしてください。
Please keep in close contact with affiliated contractors.
下請け業者 specifically means subcontractor, while 関連業者 is broader and includes any related business or tradesperson.
Compound of 関連 (related) + 業者 (tradesperson, business).