The cost of royalty that the Company paid to Cataler Corporation for Technical Assistance Agreement depend on 3% of unit sold. After we compared unit sold of catalysts for automobiles 2W and 4W with prior year, we found that FY2015, unit sold was dropped. The significant decrease in 2W mainly came from Sakura Industry (Thailand) Co., Ltd. bought catalysts less than prior year amount approx 530,000 pieces or 8 MB. Moreover, the significant decrease in 4W mainly came from YS Pund Co., Ltd which unit sold dropped from prior year amount approx 350,000 pieces or 21 MB and decreasing in Siam Calsonic Co., Ltd. amount approx 100,000 pieces or 7 MB and TTTC(EXPORT) amount approx 4 MB. So, the sales volume decreased from pror year which resulted to decrease in cost of Royalty fees in this year.