奥佳华：公司外销业务结算货币主要为美元，现已经形成一套有效汇率风险管理机制，为应对汇率波动风险

Group 1 - The core viewpoint of the article highlights that the company, Oujiahua, has a significant portion of its revenue derived from overseas sales, accounting for approximately 65% of total operating income [2] - The company has established an effective foreign exchange risk management mechanism to mitigate the impact of currency fluctuations, particularly in light of the recent appreciation of the Renminbi [2] - Oujiahua utilizes financial instruments such as foreign exchange hedging to lock in costs and maintain stable operations amidst exchange rate volatility [2]