Inventory increased by ~ 46 MB or 19% from Q4'13 mainly because the Company stocks higher level of raw materials, which were Fiber glass (~ 50 MB) as a mean to control low cost of sales and hence, greater profit. And Copper foil arose by 45 MB which also consisted of non-standard product that the Company had already set up Raw Material for return amounting (-28 MB). On the other hand, the net decreased in Laminate amount (~ -22 MB) since the Company received Laminate returned from customers due to the failed quality inspection .