The Secretary for Food and Health, Dr Ko Wing-man (left), this afternoon (August 25) visited aquaculture and crop farms in the New Territories to see for himself the latest developments of the local aquaculture and agricultural industries. Photo shows a representative of oyster farming briefing Dr Ko on the raft culture method adopted by many oyster farmers in recent years during the tour at oyster rafts in Lau Fau Shan.   Close