How accurate is this hazmat checker and where is this information coming from ?
What is the accuracy of the result hazmat checker give me?
The hazmat checker displays the same data that Amazon.com shows the (you) the seller, the extension checks each product in real-time through your browser as if you were requesting the information from Amazon Seller Central.
Where is the information coming from?
The extension gets the hazmat restrictions results directly from Amazon.com's system thru pages that are available but require you to be logged into Amazon seller central to see and interact with them.