Raw and auxiliary materials of organic fertilizer production have a variety of sources, such as livestock manure, agricultural waste, industrial wastewater, domestic waste, and urban sludge. Organic fertilizer production may require the addition of certain amount of NPK substances, as well as the microbial agents to ferment for a period of time.
Generally speaking, organic fertilizer raw and auxiliary materials are fairly cheap. Accordingly, rice bran, yeast and sugar can also replace with microbial agents, etc.
If the customer owns a livestock farm, the cost of raw materials can be negligible. If not, you need to acquire locally and calculate the cost according to the actual local situation.