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Subsequent Event (Details) | 1 Months Ended
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Feb. 23, 2022
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Subsequent Event (Details) [Line Items] |
Subsequent event description | Dongfang Paper fully paid the RMB320 million (approximately $45million) as the consideration for the acquisition per agreement that Dongfang Paper had entered into with the shareholder of Hebei Tengsheng Paper Co., Ltd.

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