reduction was recognized. Since 3Q17, regulatory fee composes of 1) 1.5% of revenue as license fee 2) 2.5% of revenue as USO fee, and 3) Bt2/mobile number/month of numbering fee. 3Q17 Market and Competitive

mn) New progressive license fee rate 0 – 100 0.125% 101 – 500 0.25% 501 – 1,000 0.5% 1,001 – 10,000 0.75% 10,001 – 25,000 1% 25,001 – 50,000 1.25% >50,000 1.5% At present, total regulatory fee composes