Wstaw do pliku manufacturer.tpl przed:
	{if $products}
		{include file="$tpl_dir./product-sort.tpl"}
		{include file="$tpl_dir./product-list.tpl" products=$products}
		{include file="$tpl_dir./pagination.tpl"}
	{else}
		<p class="warning">{l s='No products for this manufacturer.'}</p>
	{/if}to:
{$manufacturer->description}Oczywiście musisz mieć opis przy danym producencie.
pozdrawiam