Inventories - Schedule of Inventories (Details) ¥ in Thousands, $ in Thousands	Dec. 31, 2025 CNY (¥)	Dec. 31, 2025 USD ($)	Dec. 31, 2024 CNY (¥)
Schedule of Inventories [Abstract]
Raw materials	¥ 5,967	$ 849	¥ 3,358
Low value consumables	34	5	34
Finished goods	6,290	895	6,492
Less: inventory impairment			(12)
Inventories, net	¥ 12,291	$ 1,749	¥ 9,872

Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer.

+ References

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Gross amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed.

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Amount of valuation reserve for inventory.

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