OrangeX.com supports K line trading. You can quickly issue Limit order on the chart.
Quick Limit order on K line
Step 1: While moving the cursor, click the "➕" next to the K line price and enter the amount or select the Position ratio.
Step 2: Click "Open Short" to order Limit order at the displayed price.

OrangeX.com How to take profit/loss cut Order with the app
Step 1: Drag Position on the K line chart and set profit taking Order (TP) and stop loss Order (SL).
Step 2: Click "Create" and set TP/SL to Position.
How to change K line profit taking/loss cutting Order with OrangeX.com app
Step 1: Drag the profit take/loss cut Order on the K line chart.
Step 2: Click "Confirm" to change profit-taking/loss-cutting Order.