还有一部分品牌，为了推广自己的产品，不择手段，跟医院的医生挂钩，由他们协助产品的推广，从一听里面抽成30元到80元不等的利润。
There are also some brands that, in order to promote their products, cooperate with doctors in the hospital by all means, and ask them to assist in the promotion of products, drawing profits ranging from 30 yuan to 80 yuan from one can.