Organization and principal activities (Details) |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Jiadezhigao HK | ||
| Organization and principal activities | ||
| Percentage of ownership held | 100.00% | 100.00% |
| WISMASS HK | ||
| Organization and principal activities | ||
| Percentage of ownership held | 100.00% | 100.00% |
| Shenzhen Kebiao | ||
| Organization and principal activities | ||
| Percentage of ownership held | 99.98% | 99.98% |
| Jiade Zhigao | ||
| Organization and principal activities | ||
| Percentage of ownership held | 99.98% | 99.98% |
| Kebiao Technology | ||
| Organization and principal activities | ||
| Percentage of ownership held | 99.98% | 99.98% |
| Kunyuan | ||
| Organization and principal activities | ||
| Percentage of ownership held | 74.98% | 74.98% |
| Jiazhi | ||
| Organization and principal activities | ||
| Percentage of ownership held | 99.98% | 99.98% |
| HK Yifu International Limited | ||
| Organization and principal activities | ||
| Percentage of ownership held | 100.00% | 100.00% |