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Borrowings (Tables) | 12 Months Ended
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Dec. 31, 2022
Short Term Bank Loans [member] |
Statement [LineItems] |
Summary of Borrowings |
| a. | Short-term borrowings
Bank loans mainly represented unsecured revolving loans, letters of credit and bank overdrafts.
|  | December 31 |
|  | 2021 |  |  | 2022 |
|  | NT$ |  |  | NT$ |  |  | US$ (Note 4) |
Secured bank loans, annual interest rates were 0.90%-1.87% and 2.73%-3.63% as of December 31, 2021 and 2022, respectively |  | $ | 203,127 |  |  | $ | 772,896 |  |  | $ | 25,151 |
Unsecured bank loans, annual interest rates were 0.40%-3.75% and 1.42%-6.50% as of December 31, 2021 and 2022, respectively |  |  | 40,833,302 |  |  |  | 45,958,234 |  |  |  | 1,495,550 |
|  |  | 41,036,429 |  |  |  | 46,731,130 |  |  |  | 1,520,701 |
Less: financial liabilities for hedging - current (Note 34) |  |  | 6,716,965 |  |  |  | 12,204,620 |  |  |  | 397,157 |
|  | $ | 34,319,464 |  |  | $ | 34,526,510 |  |  | $ | 1,123,544 |
Long Term Bank Loans [member] |
Statement [LineItems] |
Summary of Borrowings |
| b. | Long-term borrowings
| 1) | Bank loans
|  | December 31 |
|  | 2021 |  |  | 2022 |
|  | NT$ |  |  | NT$ |  |  | US$ (Note 4) |
Revolving bank loans |  |  |  |  |  |  |  |  |  |  |  |
Syndicated bank loans - redeemed in January 2022, annual interest rate was 1.08% as of December 31, 2021 |  | $ | 2,562,926 |  |  | $ | — |  |  | $ | — |
Others - repayable through January 2023 to July 2029, annual interest rates were 0.40%-4.00% and 1.43%-5.26% as of December 31, 2021 and 2022, respectively |  |  | 107,383,417 |  |  |  | 79,657,893 |  |  |  | 2,592,187 |
Mortgage loans (Note 36) |  |  |  |  |  |  |  |  |  |  |  |
Repayable through January 2023 to December 2033, annual interest rates were 2.32%-4.55% and 2.85%-4.40% as of December 31, 2021 and 2022, respectively |  |  | 8,031,142 |  |  |  | 8,333,805 |  |  |  | 271,194 |
|  |  | 117,977,485 |  |  |  | 87,991,698 |  |  |  | 2,863,381 |
|  | December 31 |
|  | 2021 |  |  | 2022 |
|  | NT$ |  |  | NT$ |  |  | US$ (Note 4) |
Less: unamortized discounts |  | $ | 3,642 |  |  | $ | — |  |  | $ | — |
|  |  | 117,973,843 |  |  |  | 87,991,698 |  |  |  | 2,863,381 |
Less: current portion |  |  | 4,526,683 |  |  |  | 5,041,841 |  |  |  | 164,069 |
financial liabilities for hedging - non-current (Note 34) |  |  | 4,780,931 |  |  |  | — |  |  |  | — |
|  | $ | 108,666,229 |  |  | $ | 82,949,857 |  |  | $ | 2,699,312 |
Long Term Bills Payable [member] |
Statement [LineItems] |
Summary of Borrowings |
| 2) | Long-term bills payable
|  | December 31 |
|  | 2021 |  |  | 2022 |
|  | NT$ |  |  | NT$ |  |  | US$ (Note 4) |
Ta Ching Bills Finance Corporation, repayable through January 2024 to March 2024, annual interest rates were 0.65% and 0.85%-0.94% as of December 31, 2021 and 2022, respectively |  | $ | 2,500,000 |  |  | $ | 3,000,000 |  |  | $ | 97,625 |
Cathay United Bank, repayable in April 2024, annual interest rate was 1.49%-1.56% as of December 31, 2022 |  |  | — |  |  |  | 9,000,000 |  |  |  | 292,873 |
China Bills Finance Corporation, redeemed in December 2022, annual interest rate was 0.65% as of December 31, 2021 |  |  | 2,500,000 |  |  |  | — |  |  |  | — |
Mega Bills Finance Corporation, redeemed in March 2022, annual interest rate was 0.65% as of December 31, 2021 |  |  | 2,000,000 |  |  |  | — |  |  |  | — |
International Bills Finance Corporation, redeemed in March 2022, annual interest rate was 0.65% as of December 31, 2021 |  |  | 1,500,000 |  |  |  | — |  |  |  | — |
|  |  | 8,500,000 |  |  |  | 12,000,000 |  |  |  | 390,498 |
Less: unamortized discounts |  |  | 1,353 |  |  |  | 2,247 |  |  |  | 73 |
|  | $ | 8,498,647 |  |  | $ | 11,997,753 |  |  | $ | 390,425 |

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