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Cognomen Ruangritthidech (Ruangritthidech ) , in the world, is a rare family name. The last name Ruangritthidech is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname.
Praonarin, Sethikij, Setthikij, Tasaneeporn, Setthiporn, Kiattisan, Kiatthisan, and Ditthapong