I purchased a SMOK Nord 4 kit from them. I received a faulty product. The next day I contacted them via email and explained the problem. They didn't get back to me for about 10 days when they asked me to explain what the problem is and to send them a video showing the issue. I explained again what the problem was and I made a video showing the product doesn't work. I waited again several days until they responded and they asked me to do another video. Today, it is a month since I received the faulty product and I still don't have an acceptable response/resolution. They have the worst customer service and don't even think to get a solution if there's a problem with their products. I will never buy anything from them again.