Which manufacturer produces the child transfer factor solution?

The transfer factor oral liquid produced by Changchun Jingyu Pharmaceutical Co., Ltd. is definitely no problem for children to take, because our family is a children's specialized hospital and this is what we use. As for the instructions, I'm sorry I didn't read them carefully. If necessary, I can attach a copy to you.

Product specification: 10ml*6 pieces, children 1 piece every other day. About 30 yuan is less than a box.