do you mean pegbar?! Is it what you are looking for?
I don't know which places sell animation equipments in HK,
let check this web site
http://www.cartoonsupplies.com/
it located in America, I bought a Lightbox from there,
but you know, delivery is quite expensive.
There are two kind of pegbars, one is the standard one ACME, another is three holes Round pegbar. If you wanna buy ACME, you might need to buy a very expensive ACME Hole Punche for punching a hole. For Round pegbar, you can just use a normal hole punche, you know the one we normally used in high school. Of course it is not so convenient, every time we need to measure the distance bewteen three holes on the paper, which is not so accurate, but for studying that is more than enough.
Some traditional animators think
ACME is more professional
Round is good for students
But for me, buy cheaper one, just a paper with three fixed holes.
When you work in a studio, which provide you the essential equipment.
Good Luck!!