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Li Zhijun attended the signing of the contract for the annual production of 30000 tons of long-life steel balls by Jiangsu Tonglue Metal Products Co., Ltd 2024-06-17 In the third month of spring, vitality flourishes. On March 25th, Jiangsu Tonglue Metal Products Co., Ltd. signed a contract for the annual production of 30000 tons of long-life steel balls. District Party Secretary Li Zhijun attended.