Tourmaline has the special functions of generating anion, electrolysis of water, reducing the water molecule group, radiating the far infrared ray, and dissolving out the micromineral. Under the following conditions, the tourmaline can work best: air convection, flowing water; temperature difference produced; contacting with water, or even moisture in the air, or human sweat; under the effect of gravity, water pressure, and air pressure, or even exposed to the pressure of body; subjected to vibration or friction, or being contacted with body moisture, temperature and pressure, it can be exert its effectiveness supported by friction and convection generated by physical movement. 【Application】 Renovation of facilities in Stone Spa, Khan Steam Room, Light Wave Room, Sauna Room and green home fitment. 【Use Method】 Directly put into the bathing pool, or pave on the floor or wall surface with cement upon construction. 【Technical Specifications】 1. Minus ion amount: 500 ions /cm3 2. Stable minus ion release and long-lasting function 【Dimensions】 block diameter 10-30mm 【Packing specifications】25kg/piece |