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Quimica Geral do Nordeste S.A. (QGN) This company is the largest manufacturer of sodium bicarbonate in South America. Its specialty is the production of sodium and barium based products such as sodium bicarbonate, barium carbonate, sodium sulfide, sodium metabisulfite, barium sulfate, sodium sulfite, barium chloride, and barites. Rua do Carmo 8 / 100 andar Int. Tel: 55-21-2534-0070
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