Non-stop flights from Johannesburg to Asia in the Summer of 2009:

Emirates
Dubai: 3x daily 777

South African Airways
Hong Kong: 1x daily departure in Johannesburg at 4:30 pm with A340-300 (SA 286) in 13 h 20 min

Singapore airlines
Singapore: 1x daily 777-200ER (SQ 479) in 10h20min