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Accounts Receivables (Tables)

12 Months Ended

Dec. 31, 2024

Accounts Receivables

Schedule of accounts receivables

​

​	​	​	​	​	​	​
​	​	As of December 31,
​		2023		2024
​	​	RMB	​	RMB		US$
Accounts receivables		26,082,307		34,550,465		4,733,394
Allowance for credit losses		(205,489)		(274,956)		(37,669)
Accounts receivables, net		25,876,818		34,275,509		4,695,725

Schedule of movements of allowance for accounts receivables

​

​	​	​	​	​	​	​
​	​	As of December 31,
​	​	2023	​	2024
​		RMB		RMB		US$
Balance at the beginning of the year	​	—	​	205,489	​	28,152
Additions		205,489		69,467		9,517
Balance at the end of the year		205,489		274,956		37,669

​

X

- Definition

Tabular disclosure of allowance for credit loss on accounts receivable.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

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X

- References

No definition available.

+ Details

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X

- Definition

Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(4))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(3))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

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