The other is a certificate that requires authority. There are two conditions to judge the authority of a certificate, which must be met at the same time. One is issued by the state and the other is internationally certified. The country issues industry standards, because as long as it is issued by the country where you work in China, it will always be the most authoritative. The certificate of international certification is the hometown of your identity, which can better open the interview door of high-end fitness clubs and let members trust you.