Dabarun na duniya wani simintin motsi ne, wanda aka ƙera ta hanyar da za ta ba da damar simintin ya juya digiri 360 a cikin jirgin sama a kwance. Akwai albarkatun kasa iri-iri da ake amfani da su don siminti, gami da filastik, polyurethane, roba na halitta, nailan, ƙarfe da sauran ɗanyen ma...
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