woocommerce hook individual products

Hi, I am confronted with a problem which I cannot find any answer for: I would like to address specific products (through category or ID) on archive pages to add individual messages (or inject shortcodes for price deals) with hooks. Can someone tell how I can address products with certain criteria? This is what I added:

add_action('woocommerce_after_shop_loop_item_title', 'add_custom_deals_msg', 30);

function add_custom_deals_msg() {
	if(is_product_catgory('7')) {
		echo do_shortcode('[pricing_deal_msgs_standard]');
 }
}

Thanks a lot!!!