As early as 1994, Chonghelin began to apply for two production process patents, including the production process patent and the carboxypeptidase B patent, in 58 countries around the world, including China, the United States and the European Union. It is valid for 20 years until the end of 2014
In early September 2010, Chonghelin has been launched in China. You can pay more attention to reports about it, or consult professional doctors.