Applied chemistry has two major directions: chemical biology and material chemistry. Chemical biology: Chemical biology is a frontier discipline developed in the late 1990s. It is a science that uses chemical theories, research methods and means to explore chemical problems in the process of life. Students who enter this major should master not only the basic theory of chemistry, but also the basic knowledge of biology, and at the same time have a wide range of basic skills, and can engage in various jobs related to chemical biology. Students in this major can continue to engage in research in chemistry, biology, pharmacy and their cross-cutting fields or engage in teaching, scientific research, development and management. Material chemistry: Material chemistry is a subject that studies the chemical structure, preparation and properties of various materials. Based on the basic theories of material preparation method, structural characterization, performance and environmental behavior, it focuses on the research and development of high-tech materials in frontier fields, and is the source discipline to lay the foundation of national high-tech strength. Students who enter this major should not only master the basic theories and methods of chemistry, but also master the basic knowledge and experimental skills of materials science and environmental science. Students in this major can continue to engage in research in chemistry, materials, environment and their interdisciplinary fields or engage in teaching, scientific research, development and management. Chemical engineering and technology specialty has three major directions: fine chemical industry and industrial catalysis, preparation and processing of polymer materials, and electrochemical engineering. Fine chemical industry and industrial catalysis: Fine chemical industry is a new discipline in the field of chemical industry in recent 20 years. Industrial catalysis is a key technology in chemical production and plays an important role in national economic construction. The direction of this subject is to use the basic theories and experimental methods of chemistry and chemical engineering to study the related fine chemicals and production processes in the fields of energy, materials, environmental protection, medicine and pesticides. Preparation and processing of polymer materials: Polymer engineering is a new interdisciplinary subject between polymer science and chemical engineering, which mainly involves the synthesis, preparation and processing of polymer materials. The relationship between composition, structure, processing technology and properties of single-component, multi-phase and multi-component polymer materials is mainly studied, and the preparation and processing technology are optimized to realize the functionalization and high performance of polymer materials. Electrochemical engineering: Electrochemical engineering is an interdisciplinary subject of chemistry, material science, surface science, electricity and chemical engineering, which mainly involves the fields of material electrochemistry, energy electrochemistry, environmental electrochemistry and corrosion electrochemistry engineering, focusing on the preparation of functional materials and new electrochemical power sources by electrochemical principles and methods, protecting and managing the environment and controlling the corrosion failure of materials. Students trained in this major can not only pursue further studies in polymer science and engineering, electrochemical engineering, fine chemical engineering, industrial catalysis and other majors, but also engage in teaching, research, development, production and management in chemical engineering, material science and engineering and other fields in the national economy.