I finally received the sample. At present, there seems to be no problem with the quality of the product. The customer service staff communicated with me in time if there were any problems, and the details were communicated to me quickly. it is worth cooperating with me.It's been a pleasant cooperation this time. After confirmation from other agents, their product quality is excellent. i'm currently considering purchasing the next batch of goods.Waspretty easy once l got everything set up quickly. Thefingerprint lock has worked well every time we've useit today (abuout 15 times ).