1. Different production standards: the national standard small yellow croaker is produced in strict accordance with national standards, even if there are errors, it is within the allowable range. Non-standard small yellow croaker is produced according to the standards agreed with customers, but it does not meet the requirements of national standards.

2. Different safety factors: the national standard small yellow croaker is produced in strict accordance with national standards, and the safety is greatly guaranteed. The quality of non-standard small yellow croaker is lower than the national standard, and it will be dangerous to eat.