The current situation is that domestic original attractors occupy the low-end market and imported instruments occupy the high-end market. In the competition of government procurement, domestic instruments and imported instruments rarely compete on the same stage and are in a state of mutual interference. In terms of process and flame, metal atomizers are widely used in imported instruments, with relatively concentrated characteristics and good instrument consistency. However, the domestic instrument adopts glass atomizer, which has discrete performance (sensitivity). In addition, even if the domestic instrument adopts D2 background correction method, it does not adopt double optical path structure. If we say that the technology has passed and the baseline drift is not big, it should be fooling the public. However, in most applications, baseline drift is really not the main problem. In the graphite furnace, the main gap is the background corrector. Ac Zeeman is a very common configuration in imported instruments, while domestic instruments mostly adopt D2 method, and permanent magnet Zeeman becomes the high-end configuration of domestic instruments. However, according to my opinion, there are also gaps in graphite furnaces of domestic instruments, such as acoustic noise during operation, and some key indicators, such as maximum heating rate and heating reproducibility. The more important gap is still in manufacturing technology and technology, especially in machining. I have dismantled three or four PE early instruments, and I feel very strong. For the same parts, the domestic manufacturing process and technology are at least one grade lower. Not to mention the details, some time ago mentioned their six-degree-of-freedom precision machine tool. There is a big gap in electronic technology. At present, the electronic circuit design engineers of several influential manufacturers in China are basically novices who have just come out of college for a few years. Electronic technology is only in the primary stage, and they have little knowledge of electromagnetic compatibility, low noise design, signal safety and so on, and their knowledge of components is also very poor. Most people can't even design a power transformer. In addition, most users, including domestic users, lack confidence in the original domestic attractor: will the chain drop at a critical moment? I don't know why and when these insecurities happened. Perhaps it is a painful period that a country must go through in the process of technological progress. Of course, it is undeniable that some users blindly worship foreign things and flatter foreign countries.