天坛生物(600161.SH)：不涉及疫苗业务

Group 1 - The core business of the company is the research, production, and sales of blood products, not involving vaccine business [1] - The company operates in the blood products industry [1] - The company has three main categories of products on the market: human albumin, human immunoglobulin, and human coagulation factors, along with recombinant coagulation factor products [1]