A new class of information technology, called magnonics, has been employed to develop several information-processing functionalities, such as logic gates, majority gates, and multiplexers. However, the application of these functionalities has been limited because the transmission loss of spin-wave signals makes combining these functionalities challenging. A promising technique called spin-wave soliton train was developed by experimental pioneers, however, the problem of information density was not yet overcome. In this study, a generation method of soliton train was revisited, and a 10 times larger density of spin-wave soliton train was achieved in time-domain electric experiments.