Sử dụng dao thủ công sắc để khắc lên chai theo mép vòng khóa ống hay mép băng keo đã quấn.

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
Follow the line of the clamp to unsure an even cut. Work slowly and methodically.  You may have to trace out this line 3-4 times to get a nice, deep score. Note that you aren't trying to cut through the bottle, just create a nice, even line.