A: We don't have any subsidiary oversea except an agent in Iran (you can find the contact information via our sales engineer) but we will consider that in the future. We are always interested in cooperating with any worldwide company or individual who would be willing to be our local agents to serve our customers more closely and efficiently.
Q: What kind brushes do you use in the motor?
A: There are two kind brushes we normally use: the metal brush and carbon brush. We choose based on the speed, current and lifetime requirements. For quite small motors, we only have metal brushes while for big ones we only have carbon brushes. Compared with metal brushes, the lifetime of carbon brushes are longer since it will reduce the wear on the commutator. But for low speed motor, the carbon dust might not be able to burn in time which will cause failure too.