如果需要将自定义产品属性添加到购物车，只需将以下代码行添加到模块配置中即可:

If you need add you custom product attribute to shopping cart, just add the following lines of code into your module configuration:

<config>
     <global>
          <sales>
               <quote>
                    <item>
                        <product_attributes>
                             <[your_custom_attribute_code] />
                        </product_attributes>
                    </item>
               </quote>
          </sales>
     </global>
</config>

只需将 [your_custom_attribute_code] 替换为属性代码即可. 您也可以根据需要添加任意多个属性，只需在配置中添加一个以上的属性即可.

Just replace [your_custom_attribute_code] with the code of your attribute. You may also add as many attributes as you wish, just add one more attribute into configuration.