 
PTFE coating process
 
Alumite treatment 1
    
 
Alumite treatment 2
 
Aluminum three-fins pipe
    
 
Mirror surface processing for aluminum three-fins pipe
 
Mirror surface processing for aluminum four-fins pipe
    
 
Urethane coating
 
Stainless steel cutting processing
    
 
Press-fitting parts
 
Profile extrusion cutting1
    
 
Profile extrusion cutting2
 
Profile extrusion cutting3
    
 
Machining
 
Drawing
    
 
Grinding thin-walled iron pipe and Parkerizing