Full name of etf: listed index fund. The difference with general OTC funds is that:

Etfs are usually index funds. OTC funds include index funds and active funds.

Etf funds are bought and sold in the market, and the handling fee is cheap. Trading in real time, without waiting another day, is just like buying and selling stocks. The subscription and redemption of OTC funds are delayed by one day, and the short-term redemption fee is very high (1.5%).

Therefore, I suggest that index funds in liquor, new energy, military, photovoltaic, medicine, semiconductor and other industries buy ETFs. There are obvious advantages in all aspects.