China Shenhua HK stock slips most in near 4 months as coal sales fall

** Hong Kong shares of China Shenhua Energy slip 2.9% to HK$42.66, on track for the biggest one-day pct decline since June 25

** Stock touches the lowest level since October 8

** Shanghai-listed stock 601088.SS eases 1.5% to 49.8 yuan, set for the biggest one-day pct decline since September 29

** Chinese coal producer and power generation group says its coal sales volume down 4.8% y/y at 51.4 million tonnes in September, while gross power generation up 1.3% y/y at 24.69 billion kwh

** YTD, Hong Kong stock up 10.2%, Shanghai-listed shares up 23.3%, while benchmark Hang Seng Index .HSI down 6.6%