Hong Kong International Airport (HKIA) at Chek Lap Kok is the busiest cargo gateway and one of the 10 passenger airports in the world.The world's most important for container ttraffic from 1987 to 1989, from 1992 to 1997, and from 1999 to 2004, the deepwater port operates nine container terminals in three location - Kwai Chung, Stonecutters Island and the recently completed Tsing Yi. There are many important operators, like modern Terminal (by Wharf and Swire), HongKong International Terminals (owned by Hutchison Whanpoa) and COSCO ( a Mainland China government-owned shipping company).