1. Field exploration (power supply for outdoor construction operations such as petroleum, chemical, highway, etc.) 2. Outdoor emergency (outdoor media, field rescue, electricity in pastoral areas) 3. Precision instruments (meteorological, testing, measuring and other experimental equipment power supply) 4. Scientific research (power supply for edge computing, outdoor conferences, archaeological operations, etc.) 5. Environmental protection equipment (environmental atmosphere, factory exhaust gas, exhaust gas and other equipment power supply) 6. Power repair (power inspection, repair, operation and maintenance, etc.) 7. Medical equipment (nucleic acid detection, emergency medical treatment, vehicle CT power supply) 8. Military exercises (power supply for communication equipment, outdoor training, military rescue, etc.)