I regret buying this laser. The seller is very incompetent and has only brought me problems.They don't know what to make with prtomises.Definitely don't buy from this company that delivers a damaged cooler to you and tells you it works!!!. Despite the evidence, Alibaba doesnot ask them for any refund. this is a shame for this seller!!

received the machine in good order, discussed few improvements with the supplier. all in all good cooperation with the service team and of course Ms. Anna Jiang 😊