「100億円を引きよせる手みやげ」著者 越石一彦氏 インタビュー

18 Sept 2025 · 8 min
8:11

Kazuhiko Koshiishi explains how thoughtful gifts build trust with clients and drive sales success. He shares stories about using gift-giving as a relationship-building tool that helped him close major deals and deepen customer connections.

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