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Bank Loans and Line of Credit (Tables) | 12 Months Ended
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Dec. 31, 2024
Bank Loans and Line of Credit |
Schedule of bank loans and line of credit | The following table represents short-term bank loans as of December 31, 2024 and 2023 (in thousands, except interest rate data): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | Loan | Interest | ​ | ​ | ​ | ​ | ​ | December 31, | ​ | December 31,
Subsidiary | Bank | ​ | Detail | Rate | ​ | Start Date | ​ | Due Date | ​ | 2024 | ​ | 2023
Tongmei | Bank of China (1) | $ | 1,848 | 3.5 | % | January-23 | ​ | January-24 | $ | - | $ | 1,795
​ | ​ | ​ | 2,184 | 2.8 | % | March-23 | ​ | March-24 | ​ | - | ​ | 2,118
​ | ​ | ​ | 376 | 2.7 | % | September-23 | ​ | September-24 | ​ | - | ​ | 386
​ | ​ | ​ | 876 | 3.5 | % | November-23 | ​ | November-24 | ​ | - | ​ | 876
​ | ​ | ​ | 1,003 | 3.5 | % | November-23 | ​ | November-24 | ​ | - | ​ | 1,003
​ | Bank of China (2) | ​ | 2,911 | 3.5 | % | January-23 | ​ | January-24 | ​ | - | ​ | 2,825
​ | Bank of China (5) | ​ | 1,426 | 2.4 | % | September-24 | ​ | September-25 | ​ | 1,370 | ​ | -
​ | ​ | ​ | 1,370 | 2.4 | % | November-24 | ​ | November-25 | ​ | 1,370 | ​ | -
​ | ​ | ​ | 685 | 2.7 | % | November-24 | ​ | November-25 | ​ | 685 | ​ | -
​ | Bank of Communications (1) | ​ | 1,455 | 3.3 | % | January-23 | ​ | January-24 | ​ | - | ​ | 1,414
​ | ​ | ​ | 1,380 | 3.8 | % | May-23 | ​ | May-24 | ​ | - | ​ | 1,414
​ | ​ | ​ | 1,373 | 3.8 | % | July-23 | ​ | May-24 | ​ | - | ​ | 1,414
​ | ​ | ​ | 1,376 | 3.0 | % | May-24 | ​ | May-25 | ​ | 1,370 | ​ | -
​ | ​ | ​ | 2,480 | 3.0 | % | June-24 | ​ | May-25 | ​ | 2,466 | ​ | -
​ | China Merchants Bank (1) | ​ | 4,367 | 3.7 | % | January-23 | ​ | January-24 | ​ | - | ​ | 4,235
​ | ​ | ​ | 1,386 | 3.5 | % | January-24 | ​ | January-25 | ​ | 1,370 | ​ | -
​ | ​ | ​ | 692 | 3.5 | % | February-24 | ​ | February-25 | ​ | 685 | ​ | -
​ | ​ | ​ | 692 | 3.5 | % | April-24 | ​ | April-25 | ​ | 685 | ​ | -
​ | Bank of Beijing (3) | ​ | 2,290 | 4.2 | % | January-23 | ​ | January-24 | ​ | - | ​ | 2,220
​ | ​ | ​ | 3,541 | 3.2 | % | June-23 | ​ | May-24 | ​ | - | ​ | 3,626
​ | ​ | ​ | 1,380 | 3.2 | % | June-23 | ​ | February-24 | ​ | - | ​ | 1,414
​ | ​ | ​ | 1,414 | 3.0 | % | December-23 | ​ | December-24 | ​ | - | ​ | 1,414
​ | ​ | ​ | 3,600 | 3.0 | % | March-24 | ​ | February-25 | ​ | 3,565 | ​ | -
​ | ​ | ​ | 3,580 | 3.0 | % | June-24 | ​ | June-25 | ​ | 3,565 | ​ | -
​ | Industrial Bank (1) | ​ | 2,757 | 4.3 | % | June-23 | ​ | June-24 | ​ | - | ​ | 2,825
​ | ​ | ​ | 2,744 | 4.3 | % | July-23 | ​ | July-24 | ​ | - | ​ | 2,825
​ | ​ | ​ | 2,744 | 4.3 | % | September-23 | ​ | September-24 | ​ | - | ​ | 2,825
​ | ​ | ​ | 2,851 | 3.9 | % | September-24 | ​ | September-25 | ​ | 2,740 | ​ | -
​ | ​ | ​ | 2,679 | 3.9 | % | October-24 | ​ | October-25 | ​ | 2,679 | ​ | -
​ | ​ | ​ | 1,440 | 3.2 | % | November-24 | ​ | November-25 | ​ | 1,440 | ​ | -
​ | NingBo Bank (1) | ​ | 2,744 | 4.2 | % | August-23 | ​ | September-24 | ​ | - | ​ | 2,820
​ | ​ | ​ | 1,271 | 4.3 | % | November-23 | ​ | November-24 | ​ | - | ​ | 1,271
​ | ​ | ​ | 2,825 | 4.3 | % | December-23 | ​ | December-24 | ​ | - | ​ | 2,825
​ | ​ | ​ | 1,647 | 4.3 | % | January-24 | ​ | January-25 | ​ | 1,630 | ​ | -
​ | ​ | ​ | 1,258 | 4.3 | % | May-24 | ​ | March-25 | ​ | 1,255 | ​ | -
​ | ​ | ​ | 1,822 | 3.9 | % | November-24 | ​ | November-25 | ​ | 1,822 | ​ | -
​ | ​ | ​ | 550 | 3.9 | % | December-24 | ​ | December-25 | ​ | 550 | ​ | -
​ | Industrial and Commercial Bank of China (1) | ​ | 2,744 | 3.3 | % | September-23 | ​ | September-24 | ​ | - | ​ | 2,825
​ | ​ | ​ | 2,851 | 3.3 | % | September-24 | ​ | September-25 | ​ | 2,740 | ​ | -
​ | NanJing Bank (1) | ​ | 2,752 | 3.8 | % | October-23 | ​ | October-24 | ​ | - | ​ | 2,752
​ | China Citic Bank (1) | ​ | 2,752 | 2.9 | % | June-24 | ​ | June-25 | ​ | 2,740 | ​ | -
​ | ​ | ​ | 2,851 | 2.9 | % | July-24 | ​ | July-25 | ​ | 2,740 | ​ | -
​ | ​ | ​ | 1,426 | 2.9 | % | September-24 | ​ | September-25 | ​ | 1,370 | ​ | -
​ | Agricultural Bank of China (1) | ​ | 1,235 | 2.6 | % | November-24 | ​ | November-25 | ​ | 1,235 | ​ | -
​ | ​ | ​ | 137 | 2.6 | % | December-24 | ​ | December-25 | ​ | 137 | ​ | -
BoYu | Industrial and Commercial Bank of China (4) | ​ | 1,414 | 2.7 | % | December-23 | ​ | December-24 | ​ | - | ​ | 1,414
​ | Industrial and Commercial Bank of China (1) | ​ | 1,426 | 2.8 | % | September-24 | ​ | September-25 | ​ | 1,370 | ​ | -
​ | Bank of China (1) | ​ | 1,204 | 2.4 | % | January-23 | ​ | January-24 | ​ | - | ​ | 849
​ | ​ | ​ | 1,145 | 2.3 | % | September-24 | ​ | September-25 | ​ | 1,096 | ​ | -
​ | ​ | ​ | 274 | 2.4 | % | December-24 | ​ | December-25 | ​ | 274 | ​ | -
​ | NingBo Bank (1) | ​ | 1,414 | 3.3 | % | November-23 | ​ | May-24 | ​ | - | ​ | 1,414
​ | Industrial Bank (1) | ​ | 688 | 3.6 | % | September-23 | ​ | September-24 | ​ | - | ​ | 708
​ | ​ | ​ | 1,370 | 2.7 | % | November-24 | ​ | November-25 | ​ | 1,370 | ​ | -
​ | Bank of Communications (1) | ​ | 1,414 | 3.0 | % | November-23 | ​ | May-24 | ​ | - | ​ | 1,414
​ | ​ | ​ | 274 | 3.0 | % | May-24 | ​ | May-25 | ​ | 274 | ​ | -
​ | NanJing Bank (1) | ​ | 1,370 | 2.8 | % | December-24 | ​ | December-25 | ​ | 1,370 | ​ | -
​ | Loan Balance | ​ | ​ | ​ | ​ | ​ | ​ | ​ | $ | 45,963 | $ | 52,921
Collateral for the above bank loans and line of credit
| (1) | Not collateralized.
| (2) | ChaoYang LiMei time deposit.
| (3) | AXT time deposit.
| (4) | BoYu’s land use rights and its building located at its facility in Tianjin, China. In addition, the December 2023 loan attracts a guarantee fee amounting to 0.7% of the loan amount.
| (5) | Baoding Tongmei’s land use rights and its building located at its facility in Dingxing, China. In addition, the loan attracts a guarantee fee amounting to 1.0% of the loan amount.
Schedule of maturities of long-term loan | As of December 31, 2024, the maturities of our long-term loan liabilities in five years (including current portion) are as follows (in thousands): ​
​ | ​ | ​
Maturity of long-term loans |  | ​
2025 | $ | 1,301
2026 | ​ | 1,301
2027 | ​ | 959
2028 | ​ | 1,233
2029 | ​ | 2,347

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