Because the Chinese trucks are the ones hogging most of the market share ? I don't think India is being treated favourably here. If they threaten Kamaz and Ural as well, they'll probably also get banned. In any case, the current Chinese government has proven wise so they'll probably reach, or have already reached, a win-win consensus with Russia behind closed doors if this is indeed such a big issue.Then treat fairly, this is not fair. Why not ban indian ones as well? Protect Russian one, fine but why treat Chinese enemies like India better?
I think china should go and pressure Russia to give more.