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                              | Financial Information |  
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                                  | 2021 Quarterly Results |  
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                                        | 2021 Monthly Revenues | (In NT$ million) |  |  
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                                                    | Consolidated | 2021 | 2020 | MoM Change | YoY                                            Change | Press Release |  
                                        | Jan | 44.3 | 39.3 | -6.3 | 12.7 | PDF, 226.77K |  
                                        | Jan - Jan | 44.3 |  |  | 12.7 |  |  
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                                                    | Consolidated | 2021 | 2020 | MoM Change | YoY                                            Change | Press Release |  
                                        | Feb | 44.4 | 41.1 | 0.2 | 8.1 | PDF, 222.95K |  
                                        | Jan - Feb | 88.8 | 80.4 |  | 10.5 |  |  
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                                                    | Consolidated | 2021 | 2020 | MoM Change | YoY                                            Change | Press Release |  
                                        | Mar | 48.5 | 41.4 | 9.3 | 17.2 | PDF, 253.43K |  
                                        | Jan - Mar | 137.3 | 121.8 |  | 12.7 |  |  
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                                                    | Consolidated | 2021 | 2020 | MoM Change | YoY                                            Change | Press Release |  
                                        | Apr | 1,155 | 819 | -16.1 | 41.0 | PDF, 253.47K |  
                                        | Jan - Apr | 5,053 | 4,491 |  | 12.5 |  |  
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                                                    | Consolidated | 2021 | 2020 | MoM Change | YoY                                            Change | Press Release |  
                                        | May | 964 | 1,034 | -16.6 | -6.8 | PDF, 216.16K |  
                                        | Jan - May | 6,016 | 5,524 |  | 8.9 |  |  
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                                                    | Consolidated | 2021 | 2020 | MoM Change | YoY                                            Change | Press Release |  
                                        | Jun | 1,250 | 1,339 | 29.8 | -6.6 | PDF, 179.07K |  
                                        | Jan - Jun | 7,267 | 6,863 |  | 5.9 |  |  
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                                                    | Consolidated | 2021 | 2020 | MoM Change | YoY                                            Change | Press Release |  
                                        | Jul | 1,234 | 1,369 | -1.3 | -9.9 | PDF, 180.45K |  
                                        | Jan - Jul | 8,500 | 8,233 |  | 3.3 |  |  
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                                                    | Consolidated | 2021 | 2020 | MoM Change | YoY                                            Change | Press Release |  
                                        | Aug | 1,237 | 1,313 | 0.2 | -5.8 | PDF, 180.73K |  
                                        | Jan - Aug | 9,737 | 9,546 |  | 2.0 |  |  
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                                                    | Consolidated | 2021 | 2020 | MoM Change | YoY                                            Change | Press Release |  
                                        | Sep | 1,487 | 1,479 | 20.3 | 0.6 | PDF, 179.60K |  
                                        | Jan - Sep | 11,224 | 11,025 |  | 1.8 |  |  
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                                                    | Consolidated | 2021 | 2020 | MoM Change | YoY                                            Change | Press Release |  
                                        | Oct | 1,405 | 1,405 | -5.6 | 0.0 | PDF, 180.31K |  
                                        | Jan - Oct | 12,629 | 12,429 |  | 1.6 |  |  
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                                                    | Consolidated | 2021 | 2020 | MoM Change | YoY                                            Change | Press Release |  
                                        | Nov | 1,452 | 1,395 | 3.4 | 4.1 | PDF, 179.30K |  
                                        | Jan - Nov | 14,081 | 13,825 |  | 1.9 |  |  
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                                                    | Consolidated | 2021 | 2020 | MoM Change | YoY                                            Change | Press Release |  
                                        | Dec | 1,487 | 1,355 | 2.4 | 9.7 | PDF, 180.48K |  
                                        | Jan - Dec | 15,568 | 15,179 |  | 2.6 |  |  
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