Main Business - The company's main products include safety infusion devices and blood purification equipment, with significant revenue declines in safety infusion single machines and blood purification single machines, down 39.59% and 100.00% respectively, while blood purification continuous machines saw substantial growth [2][5][6] - The first major customer accounted for a significant portion of annual sales, with the increase in transaction amount attributed to the growth in the blood purification product business and the overall industry [2][14] Supplier Information - The company sources all standard parts externally, with a mix of self-manufactured, custom procurement, and outsourced processing for non-standard components. The total procurement amount for 2024 was 23,959.42 million yuan, a decrease of 36.99% compared to the previous year [28][29] Inventory and Contract Liabilities - The company reported that the inventory of blood purification single machines remained unsold due to production cycle delays and customer facility issues, impacting revenue recognition [11][12] - The company maintains a production model based on order fulfillment, which has led to fluctuations in sales revenue for blood purification single machines [11][12] Accounts Receivable and Long-term Receivables - The company provided details on its top five customers, including transaction amounts and payment conditions, indicating a healthy receivables situation with good recovery rates [13][15] Goodwill Impairment - There were no indications of impairment for the company's assets, as the net realizable value of blood purification single machines exceeded their costs, negating the need for inventory write-downs [12][25] Construction in Progress - The company has invested in the development of its contact lens manufacturing subsidiary, with a focus on material research and production line construction, indicating a strategic expansion into the optical sector [3][24] Market Trends - The blood dialysis medical device market in China is projected to grow steadily, with a compound annual growth rate of 5.67% from 2019 to 2023, expected to reach 51.515 billion yuan by 2030 [6][14] - The company is also expanding into the contact lens market, which is anticipated to grow significantly, with the transparent and colored contact lens markets projected to reach 161 billion yuan and 183 billion yuan respectively by 2030 [18][20]