When will hrv go on the market?

it is not a product or equipment, so there is no concept of listing. HRV is a term that refers to heart rate variability. It is not a product or equipment, so there is no concept of going on the market. HRV is an index for evaluating heart health, which is widely used in hospitals, medical institutions and scientific research institutions. HRV data can be measured and analyzed by heart rate monitoring equipment and software.