I get to know one more courier service company name OCS (Tel : 03 - 4043 8379). Dunno much bout this company. Only heard of it before.

From what I know China people prefer to use TNT because the charges for them is much cheaper. I know bout this because my company's suppliers do use TNT to send documents to use. From the airway bill we know that the charges is quite cheap compare others.

As for Singapore, normally will use DHL or FEDEX. But if you feel that it's quite expensive, maybe can try to check out the price for POSLAJU reverse pick up from Malaysia. Then POSLAJU will charge you in RM.