从国内回来经过香港，需要港澳通行证吗？ps:从深圳机场到香港机场有直达巴士吗？大概多久呢？

come in...1>: passport, two blue passes in singapore, air ticket( printed copy if e-ticketed) 2>: direct-bus service to hongkong international airport , time issue, depends on time spent at customs, it takes you about half an hour from hongkong custom to the airport