How can I tell whether an online shop supports the WorldShopping service?

Please check the list of shops partnered with WorldShopping(https://www.worldshopping.global/categories) and even for shops that are not partnered, we accept orders via the request form(https://purchase-request.worldshopping.global/) as soon as possible .On shops partnered with WorldShopping, a WorldShopping cart banner is displayed at the bottom of the product page.
To add a product to your cart, click the "Add" button on the WorldShopping cart.
The WorldShopping cart is available in languages other than Japanese.