Where is the water-saving sign on the shower head?

Water-saving mark means that its products have obtained the national water-saving certification, but there are few showers with water-saving certification at present, so most of them have no water-saving mark. There are also many shower heads that can save water, and there is no water-saving sign. For example, the high-speed and low-flow shower has a flow rate of only 6L/min, which is less than 30% than that of ordinary showers.