Even branded laptops nowadays are using 'clone' parts as they do not manucafture the part themself. The difference between Branded brand and clone brand is 'after sales support' such as Dell or Acer or any other brand. But chaplang clone brand normally the sales after service is moderately slow to none (no service). So be careful.
Basically whether it is branded or clone it all brings back to where U make Ur purchase from either from a reputable store or fly by night one. The store staff attitudes to start off first (first impression). If the staff there is unfriendly or rude then U'll have trouble when U laptop got problem infuture. They'll let U go through hell before U can sort things out! Another beware