一、网上申购情况及网上发行初步中签率 根据上海证券交易所提供的数据，本次网上发行有效申购户数为 3,847,177户，有效申购股数为 28,871,912,000 股。网上发行初步中签率为 0.03002745%。配号总数为 57,743,824 个，号码范围为 100,000,000,000- 100,057,743,823。 二、回拨机制实施、发行结构及网上发行最终中签率 根据《吉林省中研高分子材料股份有限公司首次公开发行股票并在科创板上市发行公告》公布的回拨机制，本次发行最终战略配售股数为 134.8617 万股，占本次初始发行数量的 4.43%。初始战略配售股数与最终战略配售股数的差额17.2383 万股回拨至网下发行。 由于本次网上发行初步有效申购倍数为 3,330.29 倍，超过 100 倍，发行人和 主承销商决定启动回拨机制，对网下、网上发行的规模进行调节，将扣除最终战略配售部分后本次公开发行股票数量的 10%（向上取整至 500 股的整数倍，即290.75 万股）由网下回拨至网上。 回拨机制启动后，网下最终发行数量为 1,749.4383 万股，占扣除最终战略配售数量后发行数量的 60.18%；网上最终发行数量为 1,157.7000 万股，占扣除最终战略配售数量后发行数量的 39.82%。 回拨机制启动后，网上发行最终中签率为 0.04009779%。

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