Description of characteristics 1. Significant low noise performance, the noise limit of the unit is 75db (a) (1m away from the unit). 2. The overall design of the unit is compact in structure, small in size, and novel and beautiful in shape. 3. Multilayer shielding impedance mismatch sound insulation cover. 4. High efficiency noise reduction type multi-channel air inlet and exhaust, air inlet and exhaust channels, to ensure sufficient power performance of the unit. 5. Large impedance composite silencer. 6. Large capacity fuel injector. 7. Special quick opening cover, convenient maintenance. The whole machine is small in size, light in weight and compact in structure. The sound insulation cover has beautiful appearance, simple disassembly and assembly, and convenient operation of the unit. The matching brand-name diesel engine, brand-name generator and fully sealed automatic voltage regulator have excellent performance and reliable operation.