The two sides of the project are the investor and the operator.
Tips
usage
The 方 suffix marks a party to a transaction: 甲方 (Party A/client), 乙方 (Party B/vendor), 投资方 (investor), 运营方 (operator), 合作方 (partner). Use 投资方 in contracts and deal news; use 投资者 for an individual retail investor.