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Concentration and Risks | 12 Months Ended
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Dec. 31, 2022
Concentration and Risks |
Concentration and Risks | 4. Concentration and Risks (a) Concentration of credit risk Assets that potentially subject the Group to significant concentrations of credit risk primarily consist of cash and cash equivalents, restricted cash, short-term investment, trade receivable, amount due from related parties, deposits and other receivables. The maximum exposure of such assets to credit risk is their carrying amounts as of the balance sheet dates. As of December 31, 2021 and 2022, the great majority of the Group’s cash and cash equivalents, restricted cash and short-term investments were held by major financial institutions located in the PRC and the United States which management believes are of high credit quality based on their credit ratings. (b) Currency convertibility risk The PRC government imposes controls on the convertibility of RMB into foreign currencies. The Group’s cash and cash equivalents and restricted cash denominated in RMB that are subject to such government controls amounted to RMB10,453,728 and RMB13,012,259 as of December 31, 2021 and 2022, respectively. The value of RMB is subject to changes in the central government policies and to international economic and political developments affecting supply and demand in the PRC foreign exchange trading system market. In the PRC, certain foreign exchange transactions are required by law to be transacted only by authorized financial institutions at exchange rates set by the People’s Bank of China (the “PBOC”). Remittances in currencies other than RMB by the Group in the PRC must be processed through PBOC or other Chinese foreign exchange regulatory bodies which require certain supporting documentation in order to process the remittance. (c) Foreign currency exchange rate risk Since July 21, 2005, the RMB has been permitted to fluctuate within a narrow and managed band against a basket of certain foreign currencies. While the international reaction to the RMB appreciation has generally been positive, there remains significant international pressure on the PRC government to adopt an even more flexible currency policy, which could result in a further and more significant appreciation of the RMB against other currencies. ​ (d)Concentration of customers and suppliers The following tables summarized the customer with greater than 10% of the total revenue and account receivables: ​
​ ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the Year Ended December 31, |
​ |  | 2020 |  | 2021 |  | 2022 |
Percentage of the total revenue |  | ​ | ​ |  |  |  | ​
Customer A |  | * | ​ | 12 | % | * | ​
​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, | ​ | December 31, |
​ |  | 2021 |  | 2022 |
Percentage of the account receivables |  |  |  |  | ​
Customer A |  | 36 | % | 21 | %
​ * Less than 10% The following tables summarized the supplier with greater than 10% of the total purchase and payables: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the Year Ended December 31, |
​ |  | 2020 |  | 2021 |  | 2022 |
Percentage of the total purchase |  | ​ | ​ |  |  |  | ​
Supplier A |  | 16 | % | 20 | % | 20 | %
​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, | ​ | December 31, |
​ |  | 2021 |  | 2022 |
Percentage of the payables |  |  |  |  | ​
Supplier A |  | 28 | % | 31 | %
​

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- Definition The entire disclosure for any concentrations existing at the date of the financial statements that make an entity vulnerable to a reasonably possible, near-term, severe impact. This disclosure informs financial statement users about the general nature of the risk associated with the concentration, and may indicate the percentage of concentration risk as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -URI https://asc.fasb.org/topic&trid=2134479 + Details
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