What is humic acid and its origin
Humic acid is a macromolecular organic substance widely found in nature. It is widely used in agriculture, forestry, animal husbandry, petroleum, chemical, building materials, medical and health, environmental protection and other fields. In particular, it now advocates the construction of ecological agriculture, pollution-free agricultural production, green food, pollution-free environmental protection, etc.and makes “humic acid” highly […]