I compared the previous 2 orders from the supplier. The supplier ship the by UPS. I found out the number of days that UPS took to delivery the products are not consistent. Here is the result :

25/April/2011 = I paid money.
01/May/2011 = seller start ship it out (6 days after I paid).
09/May/2011 = dilepaskan dari Kastam.
12/May/2011 = received it.
12 - 1 = 11 days.
07 and 08 May were weekends. So it took 6 days to delivery from America to Kastam Malaysia.

30/Sep/2011 = I paid money.
04/Oct/2011 = seller start ship it out (4 days after I paid).
10/oct/2011 = dilepaskan dari kastam.
13/oct/2011 = received it.
13 - 4 = 9 days.
08 and 09 OCT were weekends. So it took 4 days to delivery from America to Kastam Malaysia.