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O’tga chidamli shamotli mahsulotlar: Olovga chidamli mullit-kremniyli astarli mahsulotlar MKRS-50 No 3, 9, 10, 11, 85, 86, 100-106 — MXIK (IKPU) kodi 06902001020000447 · Tasnif by Krafta