 product has been marked.</p>
<pre class="prettyprint source lang-javascript"><code>  // first you need to get a <a href="DeveryRegistry.html">DeveryRegistry</a> instance
  let deveryRegistryClient = new DeveryRegistry();

  // check product by specified address
  deveryRegistryClient.check(&quot;0x627306090abaB3A6e1400e9345bC60c78a8BEf57&quot;).then(item => {
       console.log('product brand',item.brandAccount);
       // other stuff
  });

  // or with the async syntax

  async function foo() {
         