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Tai Modur
Er mwyn cynnal dibynadwyedd cyson a diogelwch uchel, mae YT wedi pasio ardystiad ISO9001. Yn 2000, pasiodd y modur atal ffrwydrad y safon Ewropeaidd ATEX (9414 EC) a safonau Ewropeaidd EN 50014, 5001850019. Mae cynhyrchion presennol YT wedi cael tystysgrifau ATEX a gyhoeddwyd gan gyrff achredu'r Gymuned Ewropeaidd CESI ym Milan ac LCIE ym Mharis.
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