# Buy

### 購買介面指南

<figure><img src="/files/GpGeUxGg3lENSkLuQ91j" alt=""><figcaption></figcaption></figure>

* 提供四種不同的產品
  * **PositiveSSL Certificate**
    * 單一域名證書
  * **PositiveSSL Multi-Domain Certificate**
    * 多域名證書
  * **PositiveSSL Wildcard Certificate**
    * 萬用域名證書
  * **PositiveSSL Trial Certificate**
    * 免費試用30天


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