title: Query / Filter woocommerce products by product type
body: <p>I added new product type like <a href="https://wordpress.stackexchange.com/a/120220/66786">here</a></p>
  
  <p>Now I want to show just that product type. Here is the my query:</p>
  
  <pre><code>$query_args = array('post_type' =&gt; 'product' );
  
  $r = new WP_Query( $query_args );
  
  if ( $r-&gt;have_posts() ) { .........
  </code></pre>
  
  <p>How can I query only products of this new product type?</p>