Before we buy a machine, there are many questions in our brain. So how to buy a reliable machine online, is there any strategies about this aspect. The answer is yes! Firstly, you should contact Manufacturer， and try to ask more detailed information about the machine which you want to buy. Secondly, you should ask their manufacture’s certifications which may prove their reality. Thirdly, You can pay half money before you receive the machine. So choose a suitable machine is not a easy job but also need your patient.