Asia-focused private equity firm Olympus Capital Holdings Asia and Hong Kong-based enterprise Anoi have purchased a 40 percent stake in Chinese water treatment company Grant Achieve Global (GAG) from Chinese private equity firm China Renaissance Capital Investment (CRCI) and GAG’s management. Olympus has also acquired a warrant to purchase up to US$40 million in ordinary shares of GAG as part of the transaction. Financial details of the deal were not disclosed.