Tax / pajak profit using foreign broker

@Muhamad: Previously I wanted to ask, is this you who asked on this wikifx page?

From the date and details of the question, it is similar to the one asked here. The difference is, on wikifx there is evidence of a conversation with the broker's CS.

From the evidence of the conversation, I suspect fraud. Based on my experience, forex brokers do not impose taxes at the time of withdrawal, especially up to 30%. Is this a regulation from China? I personally have never traded on Chinese brokers so I don't know for sure about this.

My advice is to immediately look for the agreement document when registering an account with the broker. In the document, it should be stated about the existence of taxes at the time of withdrawal (WD). If there isn't, it is certain that you have been scammed. The only document that can be used as a guide is the initial agreement document.

@Muhamad: Further notice. After browsing the main website of huangdingfx, there is information that this broker is registered and supervised by NFA with number 0535042.

After I checked the ID number, this broker is not a member of NFA. In other words, this is a scam. Never send that 30% WD tax money.

Thank you for your answer, you are right I figured it out through wikifx as well. If this is fraud, unfortunately I'm losing money. I still don't know anything about forex trading but easily trusted people who helped me. 
Thank you for the information. I sent many questions and found out a lot of info about this and this forum answered with detail and informatively, really a lesson for me to be wise and careful in spending a large amount of money. Thanks a lot once again.