Tottenham’s laser tube is just an advertisement, the quality cannot be complimented! Last year I bought 3 thermal stimulation light tubes, and 4 of them broke during the warranty period (the broken ones were replaced with new ones). Then they broke again and I contacted the after-sales service. He said that he quit his job and changed his career. . . Guys, what do you think we should do? Don’t buy the most expensive product in the future, because the most expensive product may not necessarily be the best, it may be because their advertising is louder. It is recommended to buy a cheap laser tube with a one-year warranty, regardless of the brand.