1. Ainihin tsarin abubuwa na sanding bel: Sanding bel gaba ɗaya sun ƙunshi abubuwa na asali guda uku: Base material, Binder and abrasives.Base abu: Tufafin Tufafi, Takarda Tushen, Haɗaɗɗen tushe.Daure: Dabbobin manne, Semi-guduro, Cikakken guduro, Mai jure ruwa pr ...
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