Did you look around their website since sometimes the address of their headquarters are located in about, support just look at their website you'll find it there. How come that putting the company's address isn't allowed in their company policy? In my country the exchange coins.ph has their address posted and it can be accessed by anyone...
Binance has no information on their address or headquarters on their website. It may be because they are keeping the security because they can be the target of big time criminals.
We do not know the true purpose but we see that the binance is transparent in some detail, so if we do not have the confidence we can withdraw our crypto on their platform.
Binance is a very good Trading Exchange, but users can not always evaluate and find out all the features of the administration of this resource. More recently, there was news in the media about where the binance administration itself announced that without any problems they can even access the funds and account of their users, as well as block them for any law enforcement requirements or for other reasons . Thus, questions arise about how it can be a question of a decentralized exchanger.