Where can I buy Nivolumab in China?

Nivolumab (Nivolumab) has been marketed in China for the treatment of adult advanced skin cancer (melanoma), advanced non-small cell lung cancer, pleural mesothelioma, renal cancer, classic Hodgkin lymphoma, gastric cancer and esophageal cancer, squamous cell carcinoma of the esophagus or head and neck, bladder cancer, liver cancer or colorectal cancer. Nivolumab has not yet been included in medical insurance. This drug is a strictly controlled drug, and its purchase channels are restricted. The price of each box of 40mg/4ml may be around 4,000 yuan, and the price of each box of 100mg/10ml may be around 7,000 yuan. This drug may not be sold in domestic hospitals or pharmacies.