OKX has announced that it will be listing GRIFFAIN/USDT and ZEREBRO/USDT perpetual futures on December 27th at 16:00 and 16:15 (Korean time), respectively. These futures will support a maximum leverage of 50x. The listing of these perpetual futures provides traders with the opportunity to speculate on the price movements of GRIFFAIN and ZEREBRO, which are two popular cryptocurrencies. Perpetual futures allow traders to maintain positions for as long as they want, without worrying about the contract expiring. OKX is one of the leading cryptocurrency exchanges in the world, with a large user base and a high trading volume. The listing of GRIFFAIN and ZEREBRO perpetual futures is expected to attract even more traders to the platform.