China share index off lows, but still posts biggest weekly fall in 5 yrs
* SSEC posts biggest weekly loss in 5 yrs on fears of margin curb
* ChiNext smash record as Beijing promotes e-commerce
* Poor trade data reinforces stimulus hopes (Adds investor quotes)
By Samuel Shen and Kazunori Takada
SHANGHAI, May 8 (Reuters) - China stocks rebounded on Friday, stemming a three-day sell-off that led a key share index to its worst weekly decline in nearly five years amid fears of regulatory crackdown on speculators.
The Shanghai Composite Index rose 2.3 percent, to 4,205.92 points. But for the week, the index fell 5.3 percent, posting its worst performance since July 2010.
The CSI300 index climbed 2.0 percent, to 4,558.40, but posted a weekly decline of 4 percent, the biggest in one and a half years.
The poor performance was triggered by signs of tighter regulatory scrutiny over margin lending, which has helped fuel a near doubling in China's stock market over the past year despite a flagging economy.
Data on Friday showed that China's exports unexpectedly fell 6.4 percent in April from a year earlier, while imports tumbled by a deeper-than-forecast 16.2 percent. Continuación...