Domestic hydrogen inhaler I suggest you look at the Obad and hydrogen degree, and hydrogen pulse of these brands, from the appearance of the design is still very much in the style of the home version of the machine is about 6 kilograms or so, the flow rate of 300-600 milliliters are the same, and now there is not much hydrogen inhaler brand, basically to do this line of business is not particularly large, because this is a need to popularize the industry, the market is not large, do brand general business is not so much money to burn, because they are not medical equipment, at most even a health care instrument, the domestic also did not do much years. Not big, do brand general business is not so much money to burn, because they are not medical equipment, at most, even if a health care instrument, hydrogen absorber in the country did not do how many years, so you have to ask the brand, the market is really not much, but the manufacturers are really quite a lot, according to my understanding, now engaged in the manufacture of hydrogen absorber should be several hundred, but do have a scale of the very few, I hope that my answer can I hope my answer can help you