How to identify Original Intel Products

Dear Friends,

I want to buy assembled PC.
So I normally purchase Parts (Processer, Motherboard, RAM, HD etc.) and then assemble my self and use it.

I can easily buy parts from market but how we can test those are original parts or not.

Now a days China produce almost same to company parts. Even Windows and BIOS show logo of intel.

I have product key on part. but I am not sure where to test that?
I want to test my product keys for following of my parts.

Intel Processor
Intel Motherboard
Segate HardDisk
Dynet RAM
LG DVD Writer

I went to company sites but I do not found links to test/check those.

Please advise.

Thanks

[Xan]

Dont wast time to identify just go to Genuine Intel dealer shop and buy Original Intel Products without any hesitation dont forget to get bill and keep it at safe place also Intel's product manufactures in China.