SHENZHEN, Aug. 1 (Xinhua) -- Shenzhen, a vibrant sci-tech and advanced-manufacturing hub in south China's Guangdong Province, has seen trade volume reaching 2.2 trillion yuan (about 308 billion U.S. dollars) in the first half of this year, marking a year-on-year increase of 31.7 percent and accounting for 10.4 percent of China's total, according to Shenzhen Customs.
Products made in Shenzhen have been capturing
