1, respiratory disease patients. 2, cardiovascular disease patients, 3, mental work and high-pressure working state of sub-healthy population. 3, outdoor activities and tourists, 4, closed environment and altitude workers. 4, athletes and health lovers, 5,60 years old or older. 6, pregnant women

“请仔细阅读产品说明书或者在医务人员的指导下购买和使用”。