Solar Energy Heat Scale Inhibitor   Gui-Li-Jing heating water scale inhibitor (HWSI) is a reliable accompanier of a solar heater and enemy of scale and yellowish water.   As a fact, heater has to face water, in spite how is the calorie collected or transferred to water the water quality problem is unavoidable. Actually, due to the following questions like: heating tube scaled, heat water tank, connecting pipes and fittings’ corrosion and plugging, heat efficiency dropping, water stream narrowing and others, made bad effect onto the heater and thus effects on daily life. HWSI easily can solve these problems.   Beijing Jiulini Water Treatment Co. has been accumulated many experience against scaling and decided to aim it’s effort to alleviate/solve this problem. Taken the advantage of imported German product Jiulini Co. successfully developed HWSI, specifically used for solar heating. It can be also applied for various heating devices, such as, solar radiator , electric water boiler, bathing water heater, heat exchanger, ice maker, coffee heater, dishes washer, tee pot and so on. It possesses easy to installation, convenient to use, high effect in anti scaling. No additional energy required, once water is passing through the process scale prevention is completed. The advantage to use HWSI is considerable.   HWSI is formed by an outer case made of stainless steel and inside filter, filled with sparingly dissolving in water semitransparent ball- Gui-Li-Jing, which is totally made from food grade chemicals and the final product has been certified by CDC of Beijing Municipality and NSF (National Sanitary Federation) in US as suitable treating agent for drinking water. When water passing through the container, filling with the Guilijing, it slowly dissolves in water and combines, chemically called as chelating, the calcium and magnesium carbonates and to prevent their precipitation, thus the scaling problem is hindered.   The size of the container is decided on conception to guarantee one year one refill, on basis of average water consumption for current Chinese family. Whole year you will be warranted with no maintenance, no trouble running.