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spiral Welded steel tube whole sale(can oem odm obm)
5YRSTianjin Yuantai Derun Steel Pipe Manufacturing Group Co., Ltd.
China precision machinery parts processing, precision CNC lathe processing, tooling parts processing
6YRSDalian Runsen Precision Machinery Processing Co., Ltd.
7YRSShanghai Hanjun Garments Co., Ltd.
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