** Shares of Sieyuan Electric SZSE:002028 jump nearly 9% to 124.5 yuan, their highest level since debut in August 2004
** Stock set for biggest one-day pct gain since September 1
** Chinese power transmission and distribution equipment maker said its Q3 net profit jumped 48.7% Y/Y
** That accelerated from net profit growth of 45.7% in H1 and a 22.9% growth in Q1
** YTD, stock up 70.2%, benchmark CSI 300 Index SZSE:399300 up 17.2%