In 1966, the trademark used for sewing machine products was changed from "Wudi" to "Butterfly", and the trademark pattern remained unchanged. Interestingly, the pronunciations of "Invincible" and "Butterfly" in Shanghainese are exactly the same, and this brand switch seems smoother and smoother, because at least there is not much difference between the two brands in the local people's word-of-mouth.

Dongguan Xingchi provides a large number of industrial sewing machines;