This product is special, and we consider others on the basis of safety. Safety three-step judgment: 1. Don't listen to anyone saying it is safe. The melon seller said that his melon was sweet and he didn't pay for it. Does the boss believe you? 2, don't look at the so-called manufacturer official website, now a website is only a few hundred dollars. Be sure to check UnionPay and the People's Bank yourself. It's about money. Only these two places are credible. 3. I don't believe that I am taking the payment company channel. You can call a certain payment company to check, but people don't admit it at all. Subcontracting is not allowed due to payment business. You can find tens of thousands of mobile phone POS brands, and through the above items, 90% of the three-no products can be eliminated. Ask me if you don't know the details.