Not bad, but I think the software is still a matter of opinion. I think it's easy to use, but you may not find it easy to use, just like Taobao comments. Some people think the brand is good, others say the product is rubbish, so it's hard to say. The advantage of this company is that it allows you to experience products. It seems that there are regular experience classes. You can apply for it, try it out, see if it suits you, and then decide whether to use it. I don't think you need to worry about what you said before and after the sale. Although the company is not big, it has a good reputation.