Hi sravanshice,
Thank you for waiting.
I found this supplier from the SaleHoo directory offering Western Digital products, but it is USA based.
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I tried searching outside of our database and here's what I found:
This supplier has both the Seagate and Western Digital hard disks. It is based in HongKong. A who is check shows that their site is created March, 2008. The site declares it accepts Paypal for payment.
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I need to emphasize that since we do not have any experience buying from this supplier, SaleHoo cannot guarantee its safety or reliability.
And here is Western Digital's list of authorized distributors in China -
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Let me know if you'd like me to do further search.
All the best!