• Thai Nguyen refractory joint stock group company

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• MgO-C refractory Factory

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• Career Metallurgy joint stock company

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• Buiding & refractory materials factory of Thai Nguyen III

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• Industrial kiln construction & mechanical processing enterprise

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• Ha noi branch

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• Hai Phong branch

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• Ninh Binh branch

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• Phu Tho branch

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• Da Nang branch

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• Ho Chi Minh branch

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