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DEUBLIN Dubu Lin founded in 1945, which is the world's largest variety of rotary joint, steam joints, the siphon and internal expansion tube manufacturers. A long time, Du Bolin always to achieve the commitments to customers, improve customer satisfaction as the center, to provide customers with state-of-the-art technology, sophisticated processing, reliable performance, convenient and high long-term yields maintenance products enjoy a high reputation in the same industry in the world .