***自己回答
If you received a code that starts with B, example B0140421Y, please use the
following method.
B0 - plant
14 - year
042 - day of the year it was manufactured.
B0140421Y = 2-11-2014 (11th feb 2014)
Shelf life : 3 years
Recommended to use within 12 months after opening
*****
我知道过去的效期是七位码
但今天拿到一批说是新口味 格式是B0140921Z
推测是不是改成年月日了
请问这样是怎么看呢?
如果是照旧法，就是09年生产了?
谢谢