There are two positions to choose from: one is technical support and the other is sales. I don't know what you want to do. Since the direction is clear, we should pay attention to this information, which brands are there, and what characteristics and defects their products have. In addition, you can study their user manuals carefully, and if possible, you can get a few cheap samples to operate while watching, which is very important to improve your ability. In addition, you can pay more attention to Baidu, knowing that helping others and studying other people's answers here will also be greatly improved.