If it is to be mentioned the safe food contaminants that exist in the Thai domestic cuisine. In the past there may be mostly because humans do not have much development and it technology rarely develop.
And it will secure or food contaminants that are present in food in Thailand. In earlier times, there may be a majority. Because man has not developed much. And technology, it has not developed much.
If you mention food safety or contaminants contained in the food in it In the past, there may be mostly Because the human does not develop very well And still not developed much