1, I understand what you said, "We can only use our existing color electrolyte for users to test", so I said at that time, just do it in your existing color! Don't play word games with me! What is a demonstration? Since it is a live demonstration, you should use your machine to show the development process of things on the spot, so that people can know or understand! Don't fool people with the so-called core technology! I made it very clear when I first arrived in your Guangzhou office. I know the traditional process and formula! By the way, what are the advantages and characteristics of using your equipment to oxidize and color aluminum compared with the traditional process? Your answer is that the formula and technological process are the same as the traditional process! It's just that your machine belongs to the high frequency machine, which is more energy-saving! I thought at that time, let's just save energy! That's why I asked to try proofing with the workpiece I brought! Even your machine is energy-efficient. Imagine if you don't have certain equipment to test it. Can you tell if your equipment really saves energy just by looking at your eyes? ! So, is there any core technology that you can't see? It is a sign that you are mystifying and have no confidence in your own equipment, because you have no practical selling point! 3. "We can never do it with another machine, because we will use it for training immediately after we sell this machine." As agreed, I spent a day watching the so-called demonstration in your Guangzhou office, and the result was a feeling of being fooled! What have you lost? Now there are aluminum oxidation coloring power supplies everywhere! Its price is also cheaper than your machine! If I buy your machine, I will find that your machine is not as good as the ordinary machine during the training. You will make money then, but we will lose money! ! Is such a question worth pondering? !