In trade, the foreign exchange of export income of enterprises is exchanged with the state, and the import expenditure is also exchanged with the state. If there is a surplus, more foreign exchange will remain in the hands of the state.
Foreign exchange in the hands of the state is in charge, and enterprises have the right to exchange it only when necessary. Therefore, the ownership of foreign exchange reserves belongs to the state and the exchange right of enterprises is limited.
Foreign exchange reserves belong to the assets in the national treasury.
I don't know how to understand the term treasury funds, and I haven't heard of it.
Foreign exchange reserves are placed in the national treasury. Used to stabilize the exchange rate and export-for example, China wants to import German equipment for a long time, and the recent surge in the euro is not good for us to import equipment from Europe. At this time, you can use the euro reserves in the national treasury to invest in the market to buy equipment. On the one hand, you don't buy more expensive equipment. On the other hand, more euros circulating in the market can suppress the rise of the euro.
Actually, this is very complicated, so here is just a simple example. If you are interested in this aspect, I suggest that you can download a disk reading software, called Jin Huitong quotation software, which will help you get accurate information.