[citation][nom]rantoc[/nom]Find that list amusing considering that Asus usually is the "low price" brand in the list (beside Acer), choose the components wisely and quality will follow![/citation]
Asus is one of the only laptop manufacturers to make their own laptops. They spun off their manufacturing facility (now named Pegatron) 5 years ago, but of all the brand names they're the ones with the closest relationship between brand name and manufacturer. They're actually one of the highest quality manufacturers, they just have both high-quality and low-quality models, and most people who buy cheap computers only see the low-quality models.
Acer used to be in the same shoes as Asus, except they spun off their manufacturing division (Wistron) 10 years ago. The only others I know which manufacture their own are the Thinkpad line when IBM owned it (not sure what Lenovo's done with it), and the top of the line Sony models.
There are probably a few more, but pretty much none of the notebook brand names make their own laptops. They're made by ODMs - Original Design Manufacturers. The Macbooks are designed and manufactured by Quanta. Quanta also makes most of HP's models, and a good number of Dell's. Apple, HP, Dell, etc. exercise creative control and specify what they want. But the nuts and bolts of the design and manufacturing work is done by ODMs.
http://en.wikipedia.org/wiki/List_of_laptop_brands_and_manufacturers#Original_Design_Manufacturers_.28ODMs.29
So it's really pretty silly to be comparing laptops based on brand name. If you want to compare quality, you should be digging to figure out which ODM makes the model you bought. Unfortunately, all the brand names are very reluctant to discuss it. When the unibody aluminum Macbooks first came out, there was a fascinating article about how Quanta had developed the aluminum milling technology and pitched it to Apple who agreed to go with it on the Macbook. But I've never been able to find it again.