Dear valued users, To provide users with better trading experience and prevent market risks, Huobi Futures will adjust the following risk control parameters, after which they are expected to take effect from 10:00am on Mar. 23, 2021 (UTC). Please refer to the adjustment details as below: 1. Huobi Futures will adjust the tiered adjustment factors of the following USDT-margined swaps. In this adjustment, only the net open interest of each tier will be adjusted, while the adjustment factors of each tier keep unchanged. Maintenance Margin Rate = Adjustment Factor / the Corresponding Leverage（This data is only used for reference and will not be a basis for liquidation.） The details of the tiered adjustment factors after the adjustment can be checked on Tiered Adjustment Factors of Huobi USDT-margined Swaps in real-time without prior announcement. Please pay close attention and check actively. Note: The tiered adjustment factors will directly have impact on the liquidation price. Users who hold the positions of the above USDT-margined swaps will be affected. To avoid being liquidated, please rationally add margin or reduce your positions.   2. Huobi Futures will adjust the quantity limit for a single position-opening/closing order of coin-margined futures, coin-margined swaps and USDT-margined swaps. 1) For coin-margined futures: 2) For coin-margined swaps: 3) For USDT-margined swaps: 3. Huobi Futures will adjust the tiered margin of part of assets of coin-margined swaps and coin-margined futures. For more details about the margin rules, please refer to https://support.hbfile.net/hc/zh-cn/articles/900002930303: 1) For coin-margined swaps: 2) For coin-margined futures: Thanks for your support! Huobi Futures   Mar. 23, 2021