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Ukuvula Ukudala: Izinzuzo Zokuguqulwa Kwamanzi Amanzi Soluble Graphite Pencils Yethebula Labaculi I - Pencils 2. 3. Izinzuzo Zokusebenzisa Ama-Graphite Amanzi Soluble Pencils 3.1 Ukuhlukahlukana Kwezobuchwepheshe Bobuciko 3.2 Imiphumela Eyingqayizivele 3.3 Ukuxubana okulula nokubeka i-3.4 Ukuthunyelwa Nokuhlala