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Beijing of corrugated pipe manufacturing co., LTD is a professional production of expansion joint stock company, is China's large-scale expansion joint production base, located at Beijing daxing elm it industrial development zone, the total area of 30000 square meters. With product and mold design, product manufacturing, quality inspection of Beijing of corrugated pipe manufacturing co., LTD is a professional production of expansion joint stock company, is China's large-scale expansion......    more>>

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