what should I do if I can't tear off the trademark of the secondary filter of Invikang oxygen generator? The methods are as follows:

1. Because the adhesive used for trademark labels is not resistant to high temperature, it should be baked with warm air from a hair dryer first, and then the trademark or seal can be torn off cleanly without leaving any trace;

2. To remove the adhesive, you can tear off a layer of paper on the surface of the label, daub it with essence or gasoline, then rub it on the surface by hand to make it fully saturated with the adhesive, and finally wipe it off with a cloth, or slowly rub these adhesive marks with a rubber to remove the adhesive.