... control equipments: roundness meter, projector meter, microscope, gear-test meter, surface measuring meter and so on4 ... gear, Helical gear,bevel gear,spur bevel gear, helical bevel gear.etcPrimary Competitive Advantages: (1) We supply Spur gear,Helical gear,bevel gear,spur bevel gear,helical bevel gear ... 6. Any unqualified components could be returned to us within 30days Planetary gear for blast machine ...