Do you mean you need business class laptop, or you are just looking for laptop to use in your business?
If you mean business class laptop, Lenovo has its Thinkpad in Malaysia. Toshiba and Acer does not really push their Tecra and Travelmate respectively in Malaysia (a few models here and there but difficult to find, and don't offer really good on site warranty support  )
Since you prefer something light, then 14" or smaller.
SSD 256G is ~ RM600+/- off the shelf. Coming together as standard specs of laptop sometime could be a lot more expensive

Lenovo 14"
Thinkpad X1 Carbon, i5-3317U + Intel HD4000 + 128GB SSD (1600x900)@RM5399[1.36kg], 4GB, W7P, backlit keyboard, no ODD
Thinkpad X1 Carbon, i7-3667U + Intel HD4000 + 256GB SSD (1600x900)@RM6599[1.36kg], 4GB, W7P, backlit keyboard, no ODD
ThinkPad T430U, i5-3317U + Nvidia GT620M + 24GB mSATA + 500GB HDD@RM3799, 4GB, W7P, 3 years on-site warranty
ThinkPad T430U, i7-3517U + Nvidia GT620M + 24GB mSATA + 1TB HDD@RM4399, 8GB, W7P, 3 years on-site warranty
12.5"
ThinkPad X230, i5-3210M + Intel HD4000@RM4059, 4GB, 320GB(7200rpm), 3 years on-site warranty, external USB OD
ThinkPad X230, i7-3520M + Intel HD4000@RM4769, 4GB, 320GB(7200rpm), 3 years on-site warranty, external USB OD