Fixed Cost,Direct Materials and varrible cost increased totalling by Baht 111.47 million approximately mainly from the decrease in sales volume of Board-Standard. Therefore, the usage of inventories and supplies also increasing according to sales volume. In addition, unit cost of overall raw materials such as gypsum increased (+8.35%), whereas paper and Crude oil price decreased (-2.14%) and (-31.00%) respectively. [Please see details support in "Tab Support Data"]