Question

Why are logos like isi agmark and hallmark used on various commodities? who provides these standardardization?

Answer 1

The logos help in assuring consumers of the quality of the product. any product that happens to be having these marks has been tested and judged on a standardized set of rules and reglations that ensure that the product is safe to use. It also gaurantees quality and protect the interests of the consumers.
after testing minister of that particular field provide standardization