get_field( $filed_name ) != 0 ) ? $product->get_field( $filed_name ) : '';
echo 'value ="' . $val . '"';
echo ' maxlength="' . $maxlenght . '"/>';
if ( isset( $this->err_fields[ $filed_name ] ) ) :
echo '' . $this->err_fields[$filed_name][0] . '';
endif;
?>