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Net Revenues (Tables) | 12 Months Ended
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Dec. 31, 2023
Revenue from Contract with Customer [Abstract] |
Schedule of net revenues | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | For the Year ended December 31,
​ | ​ | 2021 | ​ | 2022 | ​ | 2023
​ |  | RMB |  | RMB |  | RMB
Product revenues |  |  |  |  |  |
Revenue from LiDAR products |  | 685,333 |  | 1,122,237 |  | 1,735,254
Revenue from gas detection products |  | 19,533 |  | 23,967 |  | 26,863
Other revenues |  | 1,200 |  | 5,663 |  | 2,773
Service revenues |  |  |  |  |  | ​
Engineering design, development and validation service and solution revenue |  | 14,026 |  | 43,101 |  | 100,493
Other service revenues |  | 676 |  | 7,702 |  | 11,606
Total |  | 720,768 |  | 1,202,670 |  | 1,876,989
​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | For the Year ended December 31,
​ |  | 2021 |  | 2022 |  | 2023
​ | ​ | RMB | ​ | RMB | ​ | RMB
​ | ​ | ​ | ​ | ​ | ​ | ​
Revenue recognized at a point of time |  | 706,066 |  | 1,175,758 |  | 1,783,803
Revenue recognized over time |  | 14,702 |  | 26,912 |  | 93,186
Total |  | 720,768 |  | 1,202,670 |  | 1,876,989
​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | For the Year ended December 31,
​ | ​ | 2021 | ​ | 2022 | ​ | 2023
​ |  | RMB |  | RMB |  | RMB
Revenue by geographic location |  |  |  |  |  |
Mainland China |  | 269,634 |  | 697,294 |  | 991,912
North America |  | 352,981 |  | 358,549 |  | 748,147
Europe |  | 67,912 |  | 86,153 |  | 70,500
Other regions |  | 30,241 |  | 60,674 |  | 66,430
Total |  | 720,768 |  | 1,202,670 |  | 1,876,989
Schedule of movements of the accounts receivable and contract balances | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Accounts |  | Contract |  | Contract
​ | ​ | Receivable | ​ | assets | ​ | liabilities
​ |  | RMB |  | RMB |  | RMB
Opening Balance as of January 1, 2021 |  | 56,319 |  | 38,337 |  | 9,357
Increase, net |  | 29,502 |  | 108,200 |  | 113,246
Ending Balance as of December 31, 2021 |  | 85,821 |  | 146,537 |  | 122,603
Increase(decrease), net |  | 399,223 |  | (133,937) |  | (82,225)
Ending Balance as of December 31, 2022 | ​ | 485,044 |  | 12,600 |  | 40,378
Increase(decrease), net | ​ | 39,774 | ​ | 7,088 | ​ | 39,547
Ending Balance as of December 31, 2023 |  | 524,818 |  | 19,688 |  | 79,925

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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-10 + Details
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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-5 + Details
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- References No definition available. + Details
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