宇通客车：公司建立了完善的管理机制和流程，做好外汇风险管理

Group 1 - The core viewpoint of the article is that Yutong Bus has implemented a comprehensive management mechanism and processes to mitigate the impact of exchange rate fluctuations [2] - The company utilizes foreign exchange risk management techniques, such as locking in exchange rates, to effectively manage foreign exchange risks [2]