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Consolidated Balance Sheets (Parenthetical) - USD ($)	Dec. 31, 2019	Dec. 31, 2018	Jan. 26, 2018
Consolidated Balance Sheets
Allowance for doubtful accounts, accounts receivable	$ 10,774	$ 49,963
Ordinary shares, shares authorized	50,000,000	50,000,000
Ordinary shares, par value (in dollars per share)	$ 0.001	$ 0.001
Ordinary shares, shares issued	11,640,820	11,621,459	10,380,000
Ordinary shares, shares outstanding	11,640,820	11,621,459

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Amount of allowance for credit loss on accounts receivable, classified as current.

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Face amount or stated value per share of common stock.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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