◕ Energy

· Renewable Energy 

· Renewable Energy Systems

· Clean Energy Utilization

· Clean Energy Conversion 

· Clean Energy Development 

· Multiphase Heat Transfer 

· Biomass Fuels 

· Biomass energy 

· Alternative Fuels 

· Biogas and Biomass 

· Green Hydrogen Energy 

· Marine Energy 

· Hydrogen and Fuel Cell Applications

· Battery Technologies and Materials

· Battery Chemistry 

· New Solar Cells

· Energy Storage Optimization 

· Electrochemical Energy Storage and Conversion 

· Energy Saving Technology

· Coal Mine Engineering and Technology 

· Thermal and Power Engineering 

· Energy Engineering and Environmental Engineering  

· Solar Energy Utilization Technology 

· Advanced Nuclear Reactor Design 

· Nuclear Safety and Radiation Protection 

· Smart Grid

· Building Energy Efficiency

· Greenhouse Gas Treatment

· Energy Analysis and Energy Transfer

· Energy Conversion and Efficiency

· Carbon Dioxide Capture Utilization and Storage (CCUS)

· Hybrid Energy Systems

◕ Environmental Engineering

· Water Resources Management 

· Soil Remediation 

· Solid Waste Management 

· Prevention of Air Pollution 

· Climate Change 

· Wastewater Discharge Management 

· Water Quality Modeling 

· Environmental Nanotechnology 

· Geographic Information System, Statistics and Remote Sensing 

· Industrial Wastewater Treatment 

· Ecosystem Restoration 

· Harmful Gas Biofiltration 

· Environmental Protection Materials 

· Waste Treatment and Recycling 

· Noise and Vibration Control

· Building Environment and Equipment Engineering 

· Soil and Water Conservation and Desertification Control 

· Civil Construction and Energy 

· Production and Environmental Effects of Bioenergy 

· Environmental Digitalization and Smart Technology 

· Sustainable Development and Low Carbon Technology 

· Ecological City Construction

· Ecological Environment Monitoring 

· Environmental Ecology

· Application of Environmental Remote Sensing.

· Industrial Pollution Control and Clean Production

· Integration and Optimization of Solar and Wind Energy

◕ Materials

· Green Materials and Sustainable Development

· Development and Application of Green Materials

· Degradable Materials

· Recycled Materials 

· Innovation of Biodegradable Materials

· Green Catalytic Chemistry

· Green catalysts and their applications in energy conversion

· Biocatalytic Materials

· Bio-based Materials Technology

· BioBiomaterials and Biomedical Engineering 

· Sustainable Building Materials and Technologies

· Additive Manufacturing Technology 

· New Functional Inorganic Non-metallic Materials 

· Smart Materials

· Structural Materials 

· Battery Materials

· Electronic and Magnetic Materials

· Polymer Materials

· Nanomaterials and Nanotechnology 

· Materials Synthesis and Processing 

· Physical and Structural Characterization of Materials

· Superconductors 

· Carbon-based Materials

· Materials Technology for MEMS Sensors

· Synthesis and Preparation of Energy Materials

· Lightweight Materials and Manufacturing Processes