A supplier — a person or organization that supplies goods, parts, or services (common in business, distribution, and infrastructure contexts).
部品の供給者が納期を守らず、生産ラインが止まった。
The parts supplier missed the delivery date, and the production line stopped.
我が社は複数の供給者と長期契約を結んでいる。
Our company has long-term contracts with multiple suppliers.
災害時には地域の供給者と連携して支援物資を届ける。
In a disaster, we coordinate with local suppliers to deliver relief supplies.