You need a Canadian mailing address to receive your PR Card and SIN Card. They are not sending those to overseas addresses. Obtaining a SIN no takes few minutes if you visit any service canada centre. They will provide you with the number on a letter and the card to follow to a Canadian address in 2 weeks.
Thanks for the reply
Just wondering if I can apply SIN from Ontario even if I am AINP guy? To put in simple words, is SIN number a federal recognition or provincial?