Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 1,318	$ 3,306
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	4,491	4,903
Loss from sale of property and equipment	53	6
Provision of bad debt allowance	682
Provision for obsolete inventories	1,824	1,626
Deferred income tax	(1,461)	(843)
Stock-based compensation	8
Changes in operating assets and liabilities
Accounts receivable	21,793	20,150
Inventories	1,145	(10,873)
Value added tax receivable	504	681
Other receivables and prepaid expenses	3,502	(8,942)
Advances on inventory purchases	(2,353)	(7,145)
Amounts due from related parties	(129)	1,117
Accounts payable	(25,954)	(14,296)
Accounts payable and other payables- related parties	58	(1,485)
Other payables and accrued liabilities	(10,789)	8,006
Value added and other taxes payable	(4,684)	(5,924)
Income tax payable	207	(942)
Net cash used in operating activities	(9,785)	(10,655)
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of property and equipment	(4,082)	(6,295)
Net cash used in investing activities	(4,082)	(6,295)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from bank loans	16,320	28,111
Repayment of bank loans	(19,904)	(30,533)
Repayment of loans from related party	8,149	2,556
Advances to related party	(5,454)	(8,734)
Net cash used in financing activities	(889)	(8,600)
EFFECT OF EXCHANGE RATE CHANGES ON CASH	2,270	(887)
NET DECREASE IN CASH AND CASH EQUIVALENTS	(12,486)	(26,437)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	47,012	62,876
CASH AND CASH EQUIVALENTS AT END OF PERIOD	34,526	36,439
Cash paid during the period for:
Interest	771	924
Income taxes	$ 2,436	$ 3,016