1, SLR cameras
Electronic photoreceptor production technology is almost all controlled by Japanese manufacturers, other countries can not. Lens processing technology is mainly controlled by Germany and Japan. Customers do not recognize the Chinese brand, digital SLR cameras with CCD and CMOS China can not produce.
2, high-end CPU
Foreign monopoly, Chinese CPU has no room for survival and development. windows and intel's ecosystem, it is difficult to survive the new system CPU. The design and processing process is complex, the reverse is difficult, and after the reverse can not figure out the law behind it.
3, high-end medical equipment
CT, medium and high-grade monitor, testing instruments, ultrasonic instruments, magnetic *** vibration, electrocardiograms, etc. are high-end medical equipment. For its mechanical, mathematical, physical, finishing are very high requirements, so many years since the domestic has not been able to build a cross-product line of scientific and technological dimension and interdisciplinary talent dimension of the platform, unable to attract to the world's top medical imaging field talents to join.
4, high-end automobile engines
China's automobile industry chain has been imperfect, many core components are still dependent on foreign countries. Although the principle of automobile engine is very simple, but we have differences in materials, processing technology, assembly process and many other aspects. This kind of complex manufacturing and China's aviation engines have the same development bottleneck.
5, industrial manufacturing (CNC machine tools)
China's CNC machine tools are still mainly low-end products, machining accuracy and supporting intelligent programming system there are gaps. At present, high-end CNC machine tools are mainly dependent on imports.
Data show that 80% of the domestic needs of high-end CNC machine tools are to be imported from abroad, and even manufacturers will be required to locate the machine tool geographic location to check the working condition, to prevent its use in the production of military equipment. And rely on high-end CNC machine tool production of a series of products China will encounter bottlenecks, such as propellers for nuclear submarines.