A company trying to sell a cheap product and make money through after sales. service. They have installed an electronic meter which will stop the filter after 10 to 12000 l or 1 year of use. The cost of after sales service per year is nearly 50% the cost of the new filter The filter will stop working unless you buy new cartridges from them. The Water tank of the filter is made of plastic they can’t even provide a metal tank. They will not disclose it in the description of the product when you are planning to buy. Please be cautious before you buy the product. Basically a cheat company.