Medical biotechnology is the basic direction to do scientific research theory and method. And these methods are inseparable from a variety of instruments and equipment, such as: PCR instrument, electrophoresis, flow cytometer and so on! So you say medical biotechnology (instrumentation direction) is engaged in the development and maintenance of experimental equipment (of course, including the promotion and sale of products) and then clinical laboratory instruments such as blood analysis, biochemical analysis, luminescence and other instrumentation promotion, development, sales!
However, I hope you will consider all the employment aspects, learn more and choose carefully!
If you want to know more about biotechnology, you can refer to the following references!
I hope this helps!