Guangzhou has the largest number of industrial zones, and there are many factories of Fortune 500 enterprises. The places with the most factories in Guangzhou are the east and west areas of Guangzhou Economic Development Zone. In addition, Baiyun, Panyu, Huadu, Luogang, Huangpu and Haizhu are more. Take the No.210 bus in Tianhe City until the intersection of East District, an hour&;s drive. Take bus No.297 in Yuancun and buses from Dongpu to Dongguan all pass through Guangzhou Economic Development Zone. There are Fortune 500 companies and some big factories here, and the most factories in Guangzhou are in these places. Generally, there are more factories in non-central areas far from the city center and some development zones. There are 10 districts and 2 county-level cities in Guangzhou. They are Yuexiu, Haizhu, Liwan, Tianhe, Baiyun, Huangpu, Nansha, Luogang, Huadu and Panyu; The two county-level cities are Zengcheng and Conghua.