The main difference is that biopharmaceuticals focus on the microbial aspect.
Biopharmaceuticals refer to the use of research results of microbiology, biology, medicine, biochemistry, etc., from organisms, biological tissues, cells, body fluids, etc., comprehensively using the principles of microbiology, chemistry, biochemistry, biotechnology, pharmacy and other sciences A class of articles for prophylaxis, treatment and diagnosis made by the method.
Such as: antibiotic preparation, biological vaccines, protein antibody purification and extraction, etc.
Pharmaceutical engineering is an engineering major that crosses chemistry, pharmacy and engineering.