CAR-T therapy is an immunotherapy that uses gene engineering technologies such as viral vectors or electroporation to implant chimeric antigen receptors (CARs) that specifically recognize tumor-associated antigens and simultaneously activate T cells into the patient's T lymphocytes. These CAR-T cells are then purified and expanded in vitro before being reinfused, allowing them to inhibit and kill tumors. Shenzhen Cell Cell Technology Co., Ltd. provides R&D and outsourced production services for CAR-T cells targeting different targets. Currently, it has successfully used its self-produced industrial-grade retroviral vectors to prepare multiple CAR-T cells targeting CD19, CD38, and BCMA-CD38 dual targets, with transduction efficiencies exceeding 70%. The company can provide a complete service from T lymphocyte collection, transduction of tumor-targeting viral vectors, CAR-T cell expansion, safety testing, and release. Currently, it provides GMP-grade CAR-T cell production services to institutions such as Huazhong University of Science and Technology and Shenzhen Hospital.