Yunfeng has a fish app certificate that is not credible.

Does the subject want to ask, "The certificate of Yunfeng Youyu app is not credible?" ? Credible. Yunfeng Youyu app is a professional and reliable service platform with profound technical level and shrewd sales market taste. The certificate is officially certified, protected by law and very credible. Yunfeng Youyu is a stock investment software of Shenzhen Youyu Intelligent Technology Co., Ltd. ..