Honestly they have some of the best customer service and great product
Honestly they have some of the best customer service I have ever dealt with, I've only had one issue with my product (Acmer S1, 10W beginner laser cutter and engraver) which I bought through the official Amazon shop, where after 7 months the main wire became faulty to the point it wouldn't work as the laser head ran its path. I contacted customer service and they asked me to send videos of the fault to an email the amazon customer service team sent me. After a few emails back and forth, and even though my machine was past the 3 month warranty, they sent me a replacement wire at no cost to myself. Fitting the replacement wire was also very straight forward, unscrew a few things here, carefully remove some glue and attatch the connectors before rescrewing the parts back where they should go. As a new starter to laser cutting and engraving I have been very impressed with this company and product and I would be more than happy to trust them in the future when I buy attatchments for the current laser I have and upgrade to a larger one once I've got more experience with this one. And to the person and people I have dealt with they've been a huge help and are a credit to the company, they made everything easy and even followed up to make sure that everything was going well, so a big thank you to them for all the support.