About the alternative domain of online.packmage.com. You must be a user of online.packmage.com
1)When you make a quotation for your customer, you can put the QR code of the 3D link into it.
This 3D link uses the alternate domain,In this way, you can set your logo and company name in 3D, and your customers cannot find the packmage through the 3D link.
2)You can set passwords for your 3D links.
You don't want everyone to be able to open your 3D links,You only want specific people to open your 3D link.
3) You have a website,You want to place your 3D link on your website.
Use the alternate domain, the visitors to your website can't find the packmage through the 3D link.