Pyongyang, May 25 (KCNA) — The Central Mining Research Institute under the State Academy of Sciences of the DPRK has developed functional tourmaline products for environmental protection.
Tourmaline is getting popularity for having such effects favorable for human health as purifying air, removing heavy metal ions from water and emitting far-infrared rays and anion.
Scientists of the institute succeeded in developing ultra-fine powder technology to raise the purity of tourmaline up to 99 percent and thus turned out various tourmaline products.
Among those products are water purifier, paints and functional wallpaper.
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