What is the relationship between Great Wall Motor and Great Wall Computer? Are they one group?

Great Wall Motors Great Wall Electric Great Wall Skate Oil are three independent enterprises Great Wall Motors is China's private automobile company Great Wall Electric is a state-owned holding company Great Wall Skate Oil is a branch brand of Sinopec Although they all use the Great Wall, but they do not go together due to the different business projects, so there is no infringement of the trademark

.