On the price of tannic acid
The price of tannic acid is related to many things. The supply and demand of the market is the main reason for it. If there are many people in need, if the supply is not enough, the price will rise; if the supply exceeds the demand, the demand will be weak, and the price will tend to fall.

The situation of the place of origin also affects a lot. The abundance of the place of origin is related to the output of tannic acid. Where the land is abundant and the weather is suitable, the yield will be abundant, and the price will be stable or drop; in case of disasters, the production will be damaged, and the price will rise easily.

The coarseness of the process also plays a role in the price of tannic acid. The method of refining can improve the quality of tannic acid, and the cost may increase, but the price will also be high; if the process is simple and clumsy, the quality will be inferior and the cost will be low, and the price will drop.

Merchants compete to control the price of tannic acid. Competitors, each seeking a way to sell, or lowering their prices to compete for the market; merchants in a single market have the pricing power, and the price is always high.

To sum up, the price of tannic acid is subject to various factors such as supply and demand, origin, process, and competition.