Dear K.Pisitpong,
Your request for special discount for these Demon two parts below are approved at 40% discount. The order is via fax to warehouse only with this approve mail attached.
1.P/N 31414823 Retail 10,410.00 Bht.
2.P/N 31269453 Retail 5,790.00 Bht.
For the other discount at 30% & 20%, please consider again. As the part on number cost is lower than the market price. I suggest to be only 10%, should be good. For part number, please consider and revise your discount offer to customer. The submit again for your final discount in both 2 parts.