预埋单是一种预先设定的订单，通常用于在特定价格或条件下自动购买或出售某种资产。预埋单的要求因不同的交易平台和资产类型而异，但以下是一些通用的要求：

设定明确的价格或条件：预埋单需要设定明确的价格或条件，以便在达到预设条件时自动执行交易。这有助于避免因价格波动而错过交易机会。

确定交易量：在设置预埋单时，需要确定交易量，以便在达到预设价格或条件时能够购买或出售所需的数量。

选择适当的交易平台：选择一个可靠和稳定的交易平台非常重要。确保平台支持预埋单功能，并且能够满足您的交易需求。

考虑费用和佣金：在设置预埋单时，需要考虑交易费用和佣金。这些费用可能会影响交易的盈利性，因此需要在设置预埋单时进行权衡。

考虑风险控制：预埋单可能会在市场波动时自动执行，因此需要谨慎考虑风险控制。确保您有适当的风险管理策略，并了解潜在的市场风险。

英文对照：

Pre-order is a pre-set order that is usually used to automatically buy or sell an asset at a specific price or condition. The requirements for pre-orders vary depending on different trading platforms and asset types, but here are some general requirements:

Set a clear price or condition: Pre-orders need to set a clear price or condition so that the trade can be automatically executed when the预设 condition is met. This helps avoid missing trading opportunities due to price fluctuations.

Determine trading volume: When setting up pre-orders, you need to determine the trading volume so that you can purchase or sell the desired amount when the预设 price or condition is met.

Choose an appropriate trading platform: Choosing a reliable and stable trading platform is very important. Make sure the platform supports the pre-order function and can meet your trading needs.

Consider fees and commissions: When setting up pre-orders, you need to consider trading fees and commissions. These fees can affect the profitability of the trade, so they need to be weighed when setting up pre-orders.

Consider risk control: Pre-orders may automatically execute during market volatility, so careful consideration of risk control is necessary. Make sure you have an appropriate risk management strategy and understand potential market risks.