Jantana I have no idea where the taxes were hidden in the original quotation or how the prelims were valued obviously they were not included in the prelims. Someone has to look at the original quotation breakdown and see where the taxes are if they were included at all. I cannot do anything from here as I do not have the information. This is why Taisei provide a breakdown BOQ so all items are priced separately. Better get K. Wichack and K. Venish to look at the original quotation and mark up