Mr. Herath who is the instructor of Electrical ,Electronic and Telecommunication trade at Vocational Training centre in Dankotuwa, has invented a special machine which can destroy the covid-19 virus particles from papers.
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Mr. Herath who is the instructor of Electrical ,Electronic and Telecommunication trade at Vocational Training centre in Dankotuwa, has invented a special machine which can destroy the covid-19 virus particles from papers.