According to the official update document, individual professional investors of HashKey Exchange refer to high-net-worth individuals with a minimum investment portfolio valuation of HK$8 million. Individual retail investors who apply for upgrade need to upload asset documents, including bank statements, securities statements, and custodians. Certificate of trust issued. In addition to accessing fiat currency trading pairs of mainstream cryptocurrencies such as BTC and ETH, individual professional investors can also trade stablecoins and access all cryptocurrency pairs.