✔ 最佳答案
each ground service has its own goods and benefits. It's hard to say. You can try cathay pacific, Hias (it belongs to Dragonair) or Jardines. And it's not difficult to get in. You may see their requirments in their websites.
About the body-check, cathay pacific will do the body check in Raffles where located in the airport. And for jardines, you will do the body check in "Chuk Kin". Of course you don't need to pay. After you passed all the interview procedures, they will ask you to do the body check. Once you passed the body check, you will get hired.