Comparative Study of EnliTuo® Before and After Technology Change in Healthy Male Volunteers

Inclusion Criteria: * Healthy males aged ≥ 18 years and ≤ 45 years on the day of signing the informed consent form; * At screening, body weight ≥ 50 kg and ≤ 80 kg, with a Body Mass Index (BMI) between 19.0 and 26.0 kg/m² (inclusive of boundary values); * Capable of understanding the study, including its purpose, research procedures, potential risks, etc., and able to communicate well with researchers and complete the study in accordance with the study requirements; * Voluntarily sign the informed consent form. Exclusion Criteria: * Subjects with any abnormally clinically significant findings in comprehensive examinations (vital signs, physical examination, electrocardiogram, chest X-ray, abdominal ultrasound, blood routine, urine routine, blood biochemistry, coagulation, etc.) as judged by the investigator; * Subjects with a history of major diseases in the cardiovascular, endocrine, nervous, digestive, respiratory, genitourinary, hematological, immune, or mental systems, or currently suffering from any disease in the above systems; * Subjects with a known or suspected history of keratitis, ulcerative keratitis, conjunctivitis, blepharitis, or severe dry eye; * Subjects with hereditary bleeding tendency, coagulation dysfunction, or a history of thrombotic or hemorrhagic diseases; * Subjects with active infections requiring systemic treatment; * Subjects positive for any of HBV surface antigen, HCV antibody, HIV antibody, or Treponema pallidum antibody; * Subjects with a h…