JOSS CANDLE -M, 中紅花燭 
These candles are perfect for funerals, ancestor birthdays, the Qingming Festival, the Hungry Ghost Festival, Easter, Tomb-sweeping Day, important holidays etcluzao.
An ideal blend of hard wax and a perfectly sized wick. 
The candle has to stand up vertically, not even at a slight angle.  Keep the candle away from drafts (air conditioning, fans, outdoors, window draft) as well, as a slight breeze could cause the flame to flare up larger than usual.