In this globalized world, more and more companies expand their businesses to China,and optimize resources utilization. There are many researches on what the barriers are, and what mode should be chosen to enter Chinese market. In contrast, there''s not much study on topics like how a foreign company can survive in the competitive Chinese market, or how to gain more profit after successfully entering Chinese market. Since most high-tech companies use joint venture mode to enter developing cities instead of developed cities in China, the research question for the book is: does improvement of key internal strategic factors in high- technology joint venture firms which entered developing cities in China within five years lead to higher financial performance? The book uses deductive and quantitative methods to analyze data from 99 top managers in high-tech joint venture companies in Tongzhou. The results are found that sales and R&D have significantly positive relationship with financial performance; besides, integration is also a correlated factor.