Pyongyang, May 25 (KCNA) -- Polarized light devices displayed at the recent 12th Pyongyang Spring International Trade Fair attracted interest of visitors for their medical function.
The wrist watches, rings and other goods, which were manufactured by making use of the special polarized light of natural Iceland spar, are used for the prevention and treatment of various diseases.
They were proved highly efficacious in the treatment of hypertension, arteriosclerosis, hyperlipemia, obesity, headache, insomnia, benumbed limbs, skin diseases and stress.
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