Product Code: by the motor type code, motor characteristics, code, design sequence number and excitation mode code, such as the composition of the order of four. type code is to characterize the various types of motor and the use of Chinese phonetic alphabet. the characteristics of the code is to characterize the performance of the motor, structure or use, but also the use of Chinese phonetic alphabet. the design of serial number is the order of the motor product design, using Arabia digital representation.