Core Viewpoint - Antu Biology (603658) has received medical device registration certificates from the Beijing Drug Administration for several diagnostic kits, enhancing its product portfolio and overall competitiveness [1] Group 1 - Antu Biology's wholly-owned subsidiary, Beijing Antu Biological Engineering Co., Ltd., has obtained registration certificates for the Lambda (λ-LC) and Kappa (κ-LC) light chain assay kits, as well as the Immunoglobulin G4 (IgG4) assay kit [1] - The registration certificates are valid for five years and are intended for the in vitro quantitative measurement of specific proteins in human serum or plasma [1] - The acquisition of these certificates further enriches the company's product offerings, thereby improving its competitive edge in the market [1]