Question 1: Do your products meet industry standards?

Answer: Yes, our products meet the industry standards like cULus, cRUus, UL, ETL and more.

Question 2: What is the warranty on your products?

Answer: Greatstone International Ltd. warrants only its title to goods sold, supplied or delivered to the buyer. All other warranties are those of the relevant manufacturer of the goods.

Greatstone International Ltd. assigns to the buyer any warranty provided by its suppliers and by the manufacturer. Visit our Product Policy for more detail.

Question 3: Why can't I see pricing?

Answer: You probably aren’t logged in or still have to wait for account approval.

Question 4: What is the cut off time for place orders online?

Answer: Orders placed before 4:00pm EST will be shipped as soon as the product is available at our warehouse.

Question 1: Can I modify or cancel my order?

Answer: The Buyer may cancel, change or modify an order on Greatstone International Ltd.’s website before the order has been accepted. The Buyer will be responsible for all applicable cancellation and restocking fees.

Question 2: Can I make any returns?

Answer: The buyer may return any product that Greatstone International Ltd. stocks and that which are not special-order items. But the buyer can only do so if a) the product is still in new condition, which means it is suitable for resale in its undamaged original packaging and with all original parts, b) it has not been used, installed, modified, rebuilt, reconditioned, repaired, altered, or damaged, and c) the buyer needs to get authorization from Greatstone before they can return the product. Visit our Product Policy for more detail.


Question 3: What happens if my order was damaged during the shipment?

Answer: The Buyer is responsible for transportation method. It is between the Buyer and the transportation company.

Question 1: I forgot my password?

Answer: If you have forgotten your password you can reset it from the login page. Below the username and password prompt, click “Lost your Password?”

Question 2: How do I change my password?

Answer: To change your password, log in to From the “My Accounts” tab, click on “Account Details”. Go to “New Password” and type in your new password.

Question 3: Can I change Shipping Destinations or Billing Info?

Answer: If you wish to change Shipping Destinations or Billing Information, log into From “My Account” and click on “Addresses”.

Question 4: How can I view my Order history?

Answer: Login to From the “My Accounts” Tab, choose “Order History”.