CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Cash Flows From Operating Activities
Net income	$ 5,299,625	$ 3,764,611
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	444,383	1,524,863
Deferred tax (benefit) expense	(117,488)	175,550
Stock compensation expense	1,194,759	2,175,973
Changes in bad debt allowance	13,241	305,519
Changes in operating assets and liabilities:
Accounts receivable	(13,463,989)	(12,209,271)
Advance to suppliers	(2,044,412)	5,089,143
Inventories	3,448	(3,593,437)
Other current assets	49,551	16,832
Accounts payable	2,511,373	(734,221)
Advance from customers	25,483	(494,054)
Accrued liabilities and other payables	(28,668)	81,744
Taxes payable	(769,630)	2,584,262
Net Cash Used in Operating Activities	(6,882,324)	(1,312,486)
Cash Flows From Investing Activities
Assignment fee received	0	1,250,000
Purchase of property and equipment	(27,529)	(26,818)
Advances to unrelated parties	0	(8,835,000)
Repayment from unrelated parties	0	15,835,000
Net Cash (Used in) Provided by Investing Activities	(27,529)	8,223,182
Cash Flows From Financing Activities
Proceeds from line of credit and bank loan	67,576,418	48,674,442
Repayment to line of credit and bank loan	(65,530,374)	(52,450,165)
Proceeds from the exercise of options for common stock	31,501	0
Net Cash Provided by (Used in) Financing Activities	2,077,545	(3,775,723)
Net (decrease) increase in cash and cash equivalents	(4,832,308)	3,134,973
Cash and cash equivalents, beginning of year	5,722,716	2,587,743
Cash and cash equivalents, end of year	890,408	5,722,716
Cash paid during the year for:
Income tax payments	227,200	0
Interest expense	$ 173,128	$ 185,860

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Amount of cash paid for interest, including, but not limited to, capitalized interest and payment to settle zero-coupon bond attributable to accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount; classified as operating and investing activities.

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