Biotech companies focus on using biological processes and living organisms to develop products and technologies that improve health, agriculture, and the environment. They often work with genetics, cell biology, and molecular biology to create solutions like new medicines, vaccines, and sustainable farming practices. These companies play a crucial role in the pharmaceutical industry by researching and producing innovative treatments for diseases. They also contribute to advancements in food production and environmental conservation, making them essential for addressing global challenges such as health crises and climate change.