(a) public dietitian level 4 (meet one of the following conditions) (1) engaged in this occupation for more than 1 year. (2) Have a technical secondary school diploma in medicine or food. (3) After formal training of public dietitians in Level 4, they have reached the required standard class hours and obtained a certificate of completion. (2) Class III public dietitian (meeting one of the following conditions) (1) has been engaged in this occupation for more than 6 years. (2) Having been engaged in this occupation for more than 4 years continuously after obtaining the Grade IV vocational qualification certificate of this occupation. (3) Having been engaged in this occupation for more than 3 years continuously after obtaining the four-level vocational qualification certificate, having reached the required standard hours after being trained by a three-level dietitian, and having obtained a certificate of completion. (4) College degree or above in medicine or food. (5) Have a college degree or above in non-medical or food majors, and have been engaged in this occupation for more than 1 year. (6) Having a college degree or above in non-medical or food major, having been formally trained by a three-level public dietitian, reaching the required standard hours and obtaining a certificate of completion.