1. How to switch the different derivatives version？
You can choose the different derivatives version via below screenshot,
2. What‘s the difference between Lite Perpetual and USDT Perpetual？
Order Mode：Lite Perpetual just only support By Cost Mode, USDT Perpetual support both By Cost and By Size Mode.
TP/SL：Lite Perpetual can be triggered based on the percentage of profit or a fixed price, USDT Perpetual just support triggered by fixed price.
Order Type：Lite Perpetual just only support Market order and Trigger order, USDT Perpetual supports three types：Market order、Trigger order、Limit order [ FOC、IOC、Post Only ]
3、Why i can not find the Lite Perpetual via APP？
At present, Lite Perpetual just only support website, do not support APP.
4、Are the assets in the Lite perpetual account segregated from the USDT perpetual account?
Lite Perpetual and USDT Perpetual applies for the same futures account asset.
5、Why can not set the limit order via Lite Perpetual？
Lite Perpetual just only support Market order and Trigger order.
6、Why can not choose the mode of By Size via Lite Perpetual？
Lite Perpetual just only support By Cost Mode, USDT Perpetual support both By Cost and By Size Mode.
7、How to close positions by trading interface？
Lite Perpetual just only support to close position via position interface.