Posachedwapa, tinayambitsa mtundu watsopano wa zomangira zowuma zowuma ndi mapiko, zomwe zimagwiritsidwa ntchito kwambiri pomanga nyumba zapamwamba ndipo ndizodziwika kwambiri ku South Korea.Zimaphatikizapo screw mutu ndi screw ndodo, ndipo imadziwika kuti screw ndodo imagawidwa m'magawo awiri, ...
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