| Schedule of Other Current Assets [Table Text Block] |
| | | June 30, 2023 | | | December 31, 2022 | |
| | | US$(’000) | | | US$(’000) | |
| | | (Unaudited) | | | | | |
| | | | | | | | | |
| Short-term loans to unrelated parties | | | 4,097 | | | | 2,197 | |
| Short-term loans interest receivables | | | 125 | | | | 22 | |
| Staff advances for business operations | | | 8 | | | | 8 | |
| Total other current assets | | | 4,230 | | | | 2,227 | |
| Allowance for credit loss | | | (1,187 | ) | | | (617 | ) |
| Other current assets, net | | | 3,043 | | | | 1,610 | |
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