Dear Mr. Rajiv,
Even we used to import sanitaryware items from China.
Yes, it is necessary to affix the MRP sticker while clearing the goods from customs. But also let me add, in the first consignment it is not necessary because untill you dont clear the goods, you don't know the output sales resultant. therefore, you must either present the reference bill of entry of the importer who is already importing the goods and the rate of duty structure will be applied as per the ref. bill of entry (recently cleared)
Once the first consignment is clear, your first consignment bill of entry will be a reference for you itself and at that time, you can apply the sticker and clear the goods with any headache from the customs.
Make sure the MRP is not far away cheaper from the existing products available in the Indian market else they may apply the charges of duty on whichever is higher.
What I would suggest is, if the CIF cost is Rs. 100 you must not declare the MRP more then or less then Rs. 145 (out of which 23-25% will be duty and other taxes)
For final advice, you must consult the C/A who will give you a proper channel.
Thank you!
Regards,
Krunal Parekh