If it is an individual customer, I suggest you go to China Bank: when remitting foreign currency, the remitter and the payee should be the same person, or the immediate family members (parents, children, spouses) of the remitter must provide relevant certificates that can prove lineal relatives. Such as: household registration book, marriage certificate and notarial certificate.
According to the regulations of SAFE, if the remittance amount exceeds US$ 50,000, it needs to be submitted to SAFE for approval before it can be processed in the bank.
The handling fee of each bank is different.