改革开放以来,我国沿海地区经济持续快速发展,并初步形成了以上海为中心的长江三角洲经济圈,以香港、广州、深圳为中心的珠江三角洲经济圈,以北京、天津为中心的京津冀经济圈。初步统计,2003年上半年,上述三大经济圈的GDP、实际利用外资额和出口额分别占全国的39.27%、68.47%和 Since the reform and opening up, the economy in our coastal areas has maintained a sustained and rapid economic growth, initially forming the Yangtze River Delta economic zone centered on Shanghai, the Pearl River Delta economic zone centered on Hong Kong, Guangzhou and Shenzhen, the Beijing-Tianjin-Hebei Economic Zone centered around Beijing and Tianjin Economic Circle. According to preliminary statistics, in the first half of 2003, the GDP, actual utilized foreign capital and export value of the three major economic circles respectively accounted for 39.27% ​​and 68.47% of the national total respectively