From my experience navigating various brokers, the verification and withdrawal process is always a critical step—primarily for security and compliance. With CMS, although specific documentation requirements are not transparently listed in the details I found, my cautious approach leads me to expect a standard set typically enforced by regulated Hong Kong institutions. Usually, this includes a government-issued photo ID (like a passport or national ID card), proof of address (such as a bank statement or utility bill issued within the last 3 months), and potentially additional documents verifying the source of funds, especially if making larger deposits or withdrawals. However, I need to voice strong caution based on the alarming withdrawal and user complaints associated with CMS. Several exposure reports describe issues such as withdrawals being systematically blocked, accounts frozen after initial small withdrawals, and requests for further deposits under the guise of “unlocking” funds. This is deeply concerning, even more so considering CMS is regulated in Hong Kong but has had its UK license revoked and is flagged for high potential risk. Given these red flags, I would never proceed with large deposits before first verifying—in writing—the broker’s withdrawal policy and ensuring all required documents are accepted and processed. Personally, I insist on clear communication and documented procedures before attempting any withdrawal. If CMS cannot provide this clarity up front, I would advise enormous caution. For me, protecting my capital always outweighs any potential opportunity.