After-sales extension
Installation guidance: Provide graphic and textual installation manuals and video guidance (if available)
Debugging assistance: remote assistance to confirm the direction of fan operation, vibration level, and operating current
Fault diagnosis: Based on on-site description and photos/videos, assist in locating the causes of abnormal noise, vibration, and
Temperature rise
Spare parts supply: long-term supply of vulnerable parts such as impellers, motors, protective nets, capacitors, etc













