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TTO MUHENDISLIK BELGELENDIRME DENEY HIZMETLERI LIMITED SIRKETI is a National Technical Approval Agency authorized by the Ministry of Environment and Urbanization. Established to provide competitive, impartial, independent and cost-effective certification services for innovative products in the building materials industry, TTO Muhendislik is the most powerful institution in Turkey with its academic background and background in its field of activity.
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