Which is better, Shuo Teng or Pfizer vaccine?

1, word of mouth: Pfizer vaccine belongs to the domestic first-line vaccine brand, with good word of mouth, high sales volume, low visibility of Shuoteng vaccine and poor word of mouth.

2. Quality: Pfizer vaccine team adopts foreign high-end technology to research and develop, and the quality is good, while Shuoteng vaccine is no different from ordinary vaccine on the market, and the quality is poor.