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| DRESEN QUIMICA, S.A. DE C.V. | |
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Colorado No. 78-B P.A. Col. Nápoles 03810, Mexico Distrito Federal, México | Tel: (55) 5543-1231, 5543-1232, 5687-2290 Fax: (55) 5523-6988 | |
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| VIAR CORPORACION, S.A. DE C.V. | |
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Jesús Jiménez Gallardo No. 1 esq. Ebanistas Fracc. Industrial Xhala 54714, Cuautitlán Izcalli Estado de México, México | Tel: (55) 5872-5142, 5872-5143, 5872-5506 Fax: (55) 5872-6849 | |
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