| China firstly set self-innovation as a nation's strategy in 2005, and put"to set up an innovation-independent country in 2020"as a strategic aim in 2006. In order to achieve this strategic aim, we have to improve the abilities of international competition and self-innovation for high-technology industries. According to the regulations of OECD, high-technology industries include the industry of aerospace and aircraft, electronics and communication equipments, computers and office equipments, medicine and medical equipments and instruments. In terms of current situations, this dissertation suggests Chinese high-technology industries to focus on below features in future developments: (1) there are some low-quality high-technology products in China; (2) the developing tendency of high-technologies is diversifying, which provides a choice space for Chinese technology introduction; (3) methods of international technology introduction have expanded from commodity trade to licensing, FDI, and other deep cooperation; (4) high-technology industries have features, such as network externalities, scale economics, high entry barrier of technology, low marginal producing cost. And according to different choice standard of consumers, the competition can be classified as two kinds, one of which is quality-standard competition and the other of which is multi-standard competition; (5) the main shortcoming of Chinese high-technology industries is lacking of high-quality core technology. According to developing experiences, it is impossible to get the core technologies by international technology introduction so as that we have to rely on self-reliance innovation.In order to improve the core competitive abilities of Chinese high-technology industries, we have to strengthen the self-innovation of local enterprises, of which the re-innovation of introduced technology and self-reliance innovation are two main methods. This dissertation suggests balancing profits between self-reliance technology and introduced technology, taking the optimal introduction strategy according to technology features, and dealing with the relationship between re-innovation based on introduced technology and self-reliance innovation, so as to prompt developments of self-reliance technology based on maintenance of the social welfare.According to the choice standard of aimed consumers, this dissertation classifies high-technology industries as two kinds. One kind is the quality-standard competition industries, which will be outlined by the vertical differentiation model. The other kind is the multi-standard competition industries, which will be outlined by the multi-dimension differentiation model. There are four main parts. The first part introduces the backgrounds of research, theories and realities. The second part focuses on how to utilize the international technology introduction to improve social welfare and industry developments. The third part emphasizes on how to protect the innovation and developments of local self-reliance innovation enterprises. At last, the fourth part makes an overview and prospect. All of the contents are as below:1. The first, second and third chapters do some researches on backgrounds, theories, and current situations of Chinese high-technology industries. The summarization of theories concentrates on the theory of strategic trade, the innovative incentive of enterprises and government innovation policies, the technology transfer and innovation in an open economy, the theory of network externality, etc. Furthermore, this dissertation points out limitations of existing conclusions to analyze technology introduction and self-reliance innovation of Chinese high-technology industries in the current situations. After a careful analysis of Chinese high-technology industries developments , this dissertation suggests that, although Chinese high-technology industries have gotten considerable achievements, there are still some problems, for example, lacking of core technologies.2. The second part of this dissertation includes the fourth and fifth chapters, which focuses on analyzing the strategies of international technology introduction. By the multi-dimension differentiation model, the fourth chapter does some researches on the influence of some technology features on the laggard country's social welfare and consecutive innovation in the multi-dimension difference market with network externality, such as the technology quality gap, technology compatibility, network externality, consumers'preference, the charge rate of international high-technology transfer, etc. Based on theoretic conclusions, the fourth chapter provides some suggestions of technology introduction and development for multi-standard competition industries, with different policies of the industry of digital TV, DVD and internet. Furthermore, by the vertical difference model, the fifth chapter analyzes the influence of some technology features on the laggard country social welfare in the market with network externality and scale economics, such as technology quality gap, scale economics gap, the charge rate of international high-technology transfer, etc, so as to provide some suggestions on technology introduction. Based on theoretic conclusions, the fifth chapter provides some suggestions of technology introduction for quality-standard industries, with developing experiences of the industry of telecommunication equipment, big airplane and high-speed railway.3. Following the second part, the third part does some researches on how to prompt the innovation and development of native self-reliance enterprises. The third part includes the sixth chapter and the seventh chapter. Considering the technology spillovers, the sixth chapter compares the re-innovation incentive of product import mode and self-reliance mode in the quality-standard competition market, and gives some advice on the choice of Chinese innovation mode. After that, by reference of the successful experiences of other countries, the seventh chapter suggests that China should keep a period of technology protection to cultivate the international competitive abilities by the local market. The seventh chapter focuses on the feasibility of above measurements in the multi-standard competition market by the multi-dimension difference model. Furthermore, it also compares the innovation incentive of enterprises with that of the society to bring forward some suggestions to make them uniform. Furthermore, setting up the developments of Chinese telecommunication equipment industry and of Chinese and Korean digital television industries as examples, the third part summarizes their experiences, and testifies the practicability of theoretic conclusions.4. The fourth part just makes an overview of the whole contents and points out the future researches.Above all, this dissertation gets main conclusions as below:1. For the high-technology industries with network externalities, if enterprises compete with multiple standards, the preference of technology introduction for different enterprises are similar just for the aim of enlarging profits and prompting consecutive innovation, but the preference between individual enterprise is quite different. While the quality gap between the self-reliance technology and available international ones is small compared with consumers'preference loss, Chinese should maintain the monopoly profits for local self-reliance enterprise, to boost the developments of self-reliance technology and social welfare. Furthermore, if enterprises make the quality-improving innovation continually, it becomes more possible that self-reliance enterprises will be extruded out the market by the high-quality enterprises.2. For the high-technology industries with network externalities and scale economics, if the competition of enterprises is vertical one, the quality gap and scale economics gap between self-reliance technology and available ones just outline the choice space for Chinese high-technology industries. If the international high-quality technology has obvious efficiency advantage, Chinese government should control the quality of introduced technology, to keep the essential market competition and balanced market structure, and avoid enterprises'collusion to hurt consumers'surplus. As the self-reliance technology has advantages of efficiency and the quality gap is not obvious, and the charge rate of introduced technology is a bit high, we should control the quality of introduced one to protect the profits of self-reliance enterprise.3. In the mode of import innovation, if the quality advantage of import products is remarkable (or the technology spillovers of import products is strong), forced by fierce competition, the innovation incentive of self-reliance enterprises is improved, and Chinese government should open the local market and insists on the mode of import innovation. If the quality advantage of import products is not remarkable and import products do not cause strong spillovers, Chinese government should support local enterprise to choose the self-reliance innovation mode to improve the quality of new products greatly. Based on above analysis, this chapter summarizes the developing experiences of Chinese telecommunication equipment industry. Starting from the"re-innovation of imports"to innovate the international 3G technology standard, their experiences are a good example of high-technology self-reliance innovation.4. By the reference of experiences of Japan, Korean and other countries, this dissertation does some researches on the rationality of technology protection period in multi standard competition market. All consequences indicate that, as the discount rate is small, it is possible for Chinese government to take use of the strategy of"time changing for space"to improve products quality and competitive abilities of local self-reliance enterprises. Meanwhile, the duration of technology protection should be appropriate. Chinese government should use R&D subsidy and R&D tax to consolidate the innovation incentive of enterprise with that of society.The main points of innovation for this dissertation are as below:1. This dissertation analyzes the marginal market conditions for all kinds of technology introduction policies, in view of the choice power of Chinese high-technology industries. Different from most of the theoretic researches, this dissertation emphasizes the feasibility and necessity of taking the optimal technology introduction. This dissertation indicates that, while facing the diversifying developing tendency of international high-technology industries, Chinese enterprises should selectively introduce the high-quality technology with suitable features, on the basis of existing low-quality self-reliance technology and the features of international technologies. By use of the vertical differentiation model and multi-dimension differentiation model, this dissertation analyzes the marginal market conditions of different technology introduction strategies for Chinese high-technology industries. Furthermore, by the theoretic certification, it is not suitable to pursue the most advanced technology in some special situations.2. Based on the existing low-quality technology, this dissertation does some researches on the sustainable developments of Chinese self-reliance technology, and also proves the rationality of self-reliance innovation in some special market. Different from other researches, in this dissertation, the theoretic researches on the sustainable development strategies of Chinese self-reliance technology is based on the existing technology resources, which makes the conclusions more closed to realities. Above all, the researches on sustainable developments of self-reliance technology mainly focus on two aspects, one of which is to analyze the preference of international technology introduction from the point of performance profits, and the other one of which is to analyze the suitable innovation mode for self-reliance enterprises from the point of innovation profits. As a result, the conclusions not only get the marginal market conditions of all kinds of self-reliance innovation strategies, but also suggest that if the existing technology with some extent of competitive abilities, it is reasonable to use the local market to protect the self-reliance innovation.3. This dissertation testifies the practicability of strategy"time changing for space"in the multi-standard competition market. By the reference of experiences of Japan, Korean, this dissertation testifies the practicability that Chinese government takes use of technology protection period to maintain the developments of self-reliance technologies, in some special market by the multi-dimension differentiation model. Furthermore, this dissertation also points out that, in the duration of technology protection, the government should adjust the innovation incentive of enterprise according to the social ones in order to achieve the optimal social welfare. After that, the above theoretic analysis has testified a new way to protect the developments of self-reliance technology for Chinese high-technology industries in the new international market.
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