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Related Party Balances and Transactions - Cost of manufacturing consignment (Details) - Suzhou Zenlead XPT New Energy Technologies Co., Ltd. - CNY (¥) ¥ in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
Feb. 28, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Related Party Balances and Transactions |  |  |
Cost of manufacturing consignment |  | ¥ 89,286 | ¥ 174,680
Consideration paid | ¥ 46,610 |  |

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