Is the seal of Chongqing Jiangbei Nutritionist Association useful?

The subject wants to ask, "Is the stamp on the certificate issued by Chongqing Jiangbei Nutritionist Association useful?" ? The certificate issued by the useless trade association is an honorary certificate, and the seal has no legal effect, and it has the seal and certificate approval seal of the appraisal center, which does not belong to the professional qualification certificate. It is illegal for trade associations to issue professional qualification certificates, which have no legal effect and are also suspected of fraud.