Dear all,
I contacted Hitbtc.com about depositing B2X, they said that, they don't recognised B2X in 28.12.2017 as a true SegWit2x. So they won't let deposited B2X. The future token B2X in their platform is only for a real team SegWit2x by Jeff garlik. So B2X in hitbtc is different from B2X here and in exrates.me.
So it is scam 2X.