Dear Khun Patcharee krab,
I need to confess that, we didn't keep vendor cost document back to Dec,2011.
We just have soft file to record revenue & cost for generate P&L report only.
For cost break down of Philips Billing in DEC,2011. I would like to explain as following detail:-
1. We have direct cost from vendor for Item 1, 2 and 4 (Transport / Inventory Storage / Pre-sale)
For Item 3,5 and 6 (Handling / Shrink wrap / Return goods inspection) these revenue come from
our warehouse staff, So, may have not direct cost from vendor.
2. Please consider vendor cost as file attached.
I have indicated invoice no. in each vendor for we may able tracking back document.
Please see detail in file attached.
Best Regards,
Montree D.