The difference between powder press thread and flat bottom-imported internal thread high pressure ball valve

The difference between the powder press thread and the flat bottom-the essence of the imported internal thread high-pressure ball valve coffee cannot be extracted, or some parts are over-extracted. That is to say, the main purpose is to flatten and tamp the coffee powder in the handle to form a flat horizontal plane, so that the hot water can be better extracted through the coffee powder, and also in order to make the coffee powder withstand the extraction of the coffee machine.