A Study of Sustainable Development of China＇s State-Level Economic and Technological Development Zones

State-level economic and technological development zones (ETDZs) are products of China‘s reform and opening-up policies and a new engine of growth for the Chinese economy. They have made tremendous contributions to the development of the Chinese economy. However,some problems have emerged in the course of this progress and new challenges are still lying ahead. Sustainable development is possible only when the strategy and objectives of development are adjusted, when the integrated investment environment is optimized, when industries are upgraded, when technical innovations are made, when independent innovation capabilities are lifted, when the mode of economic growth is changed, and when innovations are made in government management.