BEIJING GENESEE BIOTECH, INC.

CTK Biotech, Inc. is a California-based biotechnology company specializing in the development and manufacturing of innovative point-of-care (POC) diagnostic test kits and immunodiagnostic tools for the global in vitro diagnostics (IVD) community. Founded in 1997, CTK manufactures portable, easy-to-use rapid diagnostic tests that enable quick and accurate disease diagnosis in clinical, remote, and underserved settings. The company maintains in-house production of recombinant antigens and antibodies, ensuring product quality and compliance with U.S. cGMP standards and WHO approval. CTK's product portfolio includes rapid tests for influenza A/B, H. pylori, syphilis, dengue, RSV, and HIV, with multiple products achieving CE-IVDR marking. As a wholly-owned affiliate of SSI Diagnostica A/S Group, CTK employs approximately 228 personnel and generates ~$28.2M in annual revenue, serving B2B diagnostics customers worldwide.