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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Cash flows from operating activities:      
Net income before tax $ 1,557 $ 2,031 $ 1,322
Adjustments to reconcile net income to net cash provided by operating activities      
Depreciation of property and equipment 800 822 1,137
Depreciation of right-of-use assets 828 775 536
Inventories written down 1,508 2,532
Gain on disposal of property and equipment (2) (305) (237)
Provision (reverse) of impairment of trade receivables 193 (110) (372)
Change in operating assets and liabilities:      
Accounts receivable (942) (1,190) 4,763
Inventories 940 (2,757) (5,726)
Accounts payable and accrued liabilities 1,887 (1,329) (1,475)
Customer deposits (4,387) 5,797 (958)
Income tax payable (41) 388 134
Net cash provided by operating activities 833 5,630 1,656
Cash flows from investing activities:      
Purchase of property and equipment (817) (637)
Proceeds from disposal of property and equipment 2 343 72
Investment in financial assets available for sales (325)
Net cash (used in) generated from investing activities (1,140) 343 (565)
Cash flows from financing activities:      
Repayment of bank borrowings (105) (3,712) (388)
Repayment of lease liabilities (114) (1,046) (511)
Net cash used in financing activities (219) (4,758) (899)
Effect on exchange rate change on cash and cash equivalents (4) (7)
Net change in cash and cash equivalent (530) 1,208 192
BEGINNING OF YEAR 1,533 325 133
END OF YEAR 1,003 1,533 325
SUPPLEMENTAL CASH FLOW INFORMATION:      
Cash (paid) refund for income taxes (40) 158 134
Cash paid for interest $ 748 $ 717 $ 858