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Qo’shtavr (qo’shtavrli balka): Ustun I-nur № 30K1, 30K2, 30K3, 30K4 markasi 09G2S, 12G2S, boshqa past qotishma po'lat S345-S440 — MXIK (IKPU) kodi 07216001004000118 · Tasnif by Krafta