Group 1 - The core point of the article is that Chengda Biological (Benxi) Co., Ltd. has obtained a patent for a device suitable for air-tightness testing in ultrafiltration systems, addressing issues related to air leakage risks and slow pressure relief in existing devices [1] - The patent, titled "A Device for Air-Tightness Testing Suitable for Ultrafiltration Systems," was granted with the announcement number CN 223272095 U, with an application date of November 2024 [1] - The company was established in 2021 and is primarily engaged in the pharmaceutical manufacturing industry, with a registered capital of 100 million RMB [1] Group 2 - Chengda Biological (Benxi) Co., Ltd. has participated in 21 bidding projects and holds 32 patent records, along with 267 administrative licenses [1]