eyoucms list page how to call product model parameters

How to retrieve the product model parameters on the list page? The following code can implement

{eyou:list titlelen='40' infolen='20' pagesize='12' id='field'}

{eyou:arcview id='field'}
{eyou:volist name="$field.attr_list" id='field3'}
{$field3.attr_name}:{$field3.attr_value}
{/eyou:volist}
{/eyou:arcview}

{/eyou:list}