As of December 31,

2024

2025

US$

US$

2021 Series A1 Note US$ 44,000,000 1.00% due to 2026

44,435,897

45,961,356

2021 Series A2 Note US$ 21,000,000 1.00% due to 2026

21,758,873

21,975,810

2021 Series B Note US$ 90,000,000 1.00% due to 2026

93,310,627

94,240,937

159,505,397

162,178,103