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"resumen": "CENTRO DE INVESTIGACION Y DE ESTUDIOS AVANZADOS DEL INSTITUTO POLITECNICO NACIONAL publicó la invitación a cuando menos tres personas IO-11-L4J-011L4J999-N-1222-2026 el 29 de octubre de 2026 para programa de mantenimiento mayor en la sede sur del cinvestav. La contratación corresponde a Ciudad de México. La excepción a la licitación pública se fundó en el Art. 43 de la Ley de obras públicas y servicios relacionados con las mismas: Obras públicas o servicios relacionados con las mismas, dentro de los montos máximos establecidos en el pef. El expediente incluye 10 anexos y 1 partida.",
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