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The second set of "Shanghai Chongsu" shield tunneling machine casing with a diameter of 15.43 meters was built on February 13 by Jiangnan Shipbuilding (Group) Co., Ltd. Shipbuilding. The installation data was controlled within the standard range. The owner submitted the test. Recently, the shield tunneling machine casing has been disassembled and disassembled and shipped to Shanghai Tunnel Company.