Add text after price in single product page only woocomerce

Im trying to add text next to product price only in single product page. I found that price is displayed with this hook woocommerce_template_single_price (?) so I'm using this code in my functions.php:

function change_product_price_display( $price ) {
    $price .= ' su PVM';
    return $price;
add_filter( 'woocommerce_template_single_price', 'change_product_price_display' );

Nothing happens. I can make so text is shown next to price everywhere with this hook woocommerce_get_price_html, but I need text only in single product page.

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