Our products are 100% developed according to the original standard, its installation size and parts are all produced and processed according to OEM standard processing center equipment, so that all parts are exchanged with OEM original. 1. Grease: gear box and drive gear adopt German imported lubriing oil, military high and low temperature standard (-50°----230°). 2. Bearings: We all use domestic first-line brand humanism deep groove ball bearings, INA needle roller bearings imported from the United States. 3. Copper: The bare copper wire of stator coil and pure copper enameled wire of armature reach international OEM standard,high temperature resistant to 230°. 4. Steel: Stator casing fine drawing seamless steel tube,the drive gear adopts 20# steel cold chamber forging process. 5. Aluminum: All aluminum is made of international standard ADC12 6. One-way gear: Songer system standard quality 7. Relay: Taiwan Songer Imported with chip to prevent burning. 8. Generator core: all use silicon steel sheet effective magnetic field performance 9. Enameled wire: all F grade 180° high temperature wire. (Xiandeng, Great Wall two major domestic manufacturers)