Abin da kayan gwajin jiki na kayan kwalliyar kwalliya ke buƙatar yi
Ana yin gwaje-gwaje daban-daban na kayan kwalliyar kwalliya don tabbatar da cewa suna da aminci, inganci, kuma suna bin ƙa'idodi. Waɗannan gwaje-gwajen na iya bambanta dangane da nau'in marufi (misali, kwalaben, bututu, kwalba) da kayan (misali, filastik, gilashi, ƙarfe)....
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