I’ve tried the 3M stuff in the past. Isn't this the same thing?
In a word: "no". :) There are a number of companies selling kits which say “3M 300-LSE” on them, but 300-LSE is not the name of a specific 3M product – it is actually the name of an entire line of different 3M products. The adhesive we use was selected after careful in-house testing, followed by a meeting with 3M engineers, followed by more testing. We typically see our customers’ return rates for screen lifting drop to 0 after switching to our adhesive.