He thinks very highly of the products your company offers.

（彼は御社の提案する製品にとても興味をとても高く評価していますよ。）
　TOEICの模擬テスト問題集『TOEICテスト本番攻略模試』リスニング問題よりビジネスシーンの会話の中で。

• think highly of〜＝「〜を高く評価する、高く買っている、重んじる、尊重する（ to admire or respect someone or something／to think well of someone or something.）」。ofのあとは人でも物でも。highlyの部分は a lot や great deal などでも使う。
• 結構使えそうな表現。
  • Your boss must think highly of you if she gives you so much responsibility.
  • The teacher thinks a lot of Mary and her talents.
  • No one really thinks a great deal of the new policies.
  • I think highly of John.
  • The manager doesn't think much of John and says so to everyone.
  • Please Think Highly Of Yourself !
  • John thinks highly of Peter, otherwise he wouldn’t have hired him.