Petronas Cash Coupon

Petronas cash coupon that i got it from HP, i donno nowaday if we bought thing from HP we also received cash coupon also, song ho? This is only for those who purchased more than MYR1000 above then they can have this coupon, i got MYR10.00 for 5 pieces, mean i got MYR50.00 loh, haha..