Is it true that Shanghai can get a blood donation health certificate for free?

It's true. According to the Shanghai Blood Donation Organization, it is true that you can get a health certificate for free, and you can also exchange gifts and enjoy a physical examination. Shanghai, referred to as "Shanghai" or "Shen" for short, is a provincial administrative region, a municipality directly under the Central Government, a national central city, a megacity and the core city of Shanghai metropolitan area in People's Republic of China (PRC).