According to official website's inquiry, Guangzhou is a local treasure. Baiyun District is the first manufacturing area in Guangzhou, with more than 40,000 large and small factories, which is the most densely populated area in the Pearl River Delta. There are many Fortune 500 factories and large domestic enterprises in Guangzhou Economic Development Zone in Huangpu District. According to statistics, there are more than 2,000 factories in Huangpu District.