From inquiry K.Amena, the difference came from SKL recorded this amount in accounts receivable but SKC recorded in Accured Expense and did not reply this accrued expenses in the confirmation. From inquiry K.Sakulrat (Accounting Standard & Report-SKC-Staff), SKC not recorded in Account Recievable yet because the company did not received invoice as at 31 December 2012, However we checked this transaction with invoice nothing to company's name , date, amount, authorized signature and JV nothing to account's name , date , amount and authorized signature.