# Introduction

### Perpetual

Trado offers perpetual contracts denominated in U, settled in the platform's stablecoin USDX. These digital asset contract products do not have an expiration or delivery date. Instead, they utilize a funding rate mechanism to anchor the contract price to the spot price.

Each contract represents a certain quantity of digital assets. Investors can profit from price fluctuations by taking long or short positions on the contracts. The leverage ratio for the contracts ranges from 1 to 100 times, with varying maximum leverage ratios for different contracts.

### Oracle Pricing System

Trado employs an oracle price feeding mechanism. Depending on the liquidity of the currency, there are two types of price feeding mechanisms: DEX (decentralized exchange) and CEX (centralized exchange) currencies. Prices are derived from several top exchanges/swap pools, and extreme values are excluded to calculate the median price. Additionally, an exceptional handling logic is implemented to ensure that platform prices remain within normal ranges in the event of significant deviations from exchange prices.

### Isolated Margin

Trado adopts isolated margin trading. Isolated margin mode ensures that the margin for each individual position is independent of the user's trading wallet balance and positions in other currencies. This allows users to precisely control position leverage, mitigating the risk of liquidation due to excessive leverage. For instance, if a user simultaneously trades perpetual contracts for BTCUSD and ETHUSD, the margin for these two positions remains separate, and their profits or losses do not interfere with each other. In the event of liquidation of a single position, it does not affect other positions within the user's account.

### &#x20;<a href="#product-features" id="product-features"></a>


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