Objective To analyse the result of exterior quality control about 30 counties iodize salt labs.

目的200130县盐碘实验室外质控结果进行分。

One of the attractions is that a campaign to iodize salt costs only 2 cents to 3 cents per person reached per year.

碘盐吸引的一原因是每每花费2到3分钱就可以食用碘盐。