On April 20, the price trend of domestic hydrofluoric acid market was temporarily stable, the operation of on-site devices was stable, the supply of goods was normal, the price of anhydrous hydrofluoric acid market was stable in the near future, the price of fluorite rose slightly in the near future, there was a certain cost support for the hydrofluoric acid market, the operating rate of downstream refrigerant industry was still at a low level, mainly purchasing on demand, the refrigerant market trend was declining, and the price of hydrofluoric acid market was expected to be stable in the later period.