As reported by the calculation of scientists after test, electrolyzing 1 liter of water takes only 7kW, but it is equal to 1600 kg of coal. With this machine, the costs of modulating 1 liter of water include 1 liter water with the price of 5,000 VND, 7kW (is equal to 14,000 VND according to the highest price), 15,000 VND of electrolyte solut