BEIJING, Sept. 7 (Xinhua) -- Chinese shares closed mixed Friday amid market divergence, as tech shares slumped while infrastructure and coal sectors registered widespread gains.
The benchmark Shanghai Composite Index went up 0.4 percent to close at 2,702.3 points while the Shenzhen Component Index closed 0.02 percent lower at 8,322.36 points.
Combined turnover at the two bourses stood at 272 billion yuan (about 40 billion U.S. dollars), up from 249.52 billion yuan the previous trading day.
The benchmark Shanghai index jumped more than 1 percent in morning trading, before a sudden slump in technology stocks dragged the index down to the negative territory minutes before market close at midday.
Naura Technology Group, an integrated circuits maker, saw its shares tumble by 7.8 percent.
Companies related to infrastructure construction surged in the afternoon trading, with the share price of Chengdu Road and Bridge Engineering jumping by the daily limit of 10 percent.
The coal sector was also among the biggest winners, with the shares of Shaanxi Coal Industry Company rising by the daily limit of 10 percent.
The ChiNext Index, China's NASDAQ-style board of growth enterprises, gained 0.17 percent to close at 1,425.23 points.