higher costs particularly raw material costs impacted the EBITDA result compared to the same period in 2016. Fuel prices have risen however, as prices were agreed before the latest spike, the company paid

คาดว่า จะเกิดขึ้นจริง เช่น หากมีผู้ใช้งานเข้ามาใช้ระบบพร้อมกัน 100 คน ระบบจะตอบสนองเร็วหรือช้าแค่ไหน (ข) Spike testing คือ การทดสอบระบบเมื่อมีการเพ่ิมจำนวนผู้ใช้งานอย่างรวดเร็ว (ค) Endurance testing คือ

fixed broadband remained intense as all operators was capturing spike demand of work-from-home with package starting from as low as Bt299 for standard speed of 100/100Mbps versus last year price of Bt599

% yoy, +6% qoq) and non- mobile enterprise business grew 13% yoy. We continued on with cost optimization while expanding 5G network which resulted in controlled cost of service (+3% yoy, -0.5% qoq) and

to surplus capacity in of IPA post the spike profitability in 2017. This segment was further impacted by the unplanned shutdown of our Spartanburg site which also impacted our Specialty Fibers

production and earnings including new geographies. The quarter saw a spike in raw material prices, especially for paraxylene, which is expected to normalize going forward. Nevertheless, PET margins were