The broker is GTS, the person connecting us in mainland is a Taiwanese, says his surname is Zhang, phone: 18588535557, and another one is Nie Canqiu. They refused to allow me to withdraw funds when I requested. I originally had an account 313252, with funds of 30402USD. They did not allow me to withdraw, saying the large account is frozen overseas, and can't be withdrawn in RMB, have to switch to u channel. The broker opened a new account 600472 for me, saying the fund from the old account 313252 will be transferred to the new account 600472. Later, the old account 313252 inexplicably withdrew funds, what shows on the new account 600472 is credit limit, the balance is gone. The account is opened by GTS, customer service is GTS's, emails are sent by GTS. This is a scam in collusion with the scammer and the broker. I request the GTS broker return my money back to me.