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16. CUSTOMER CONCENTRATION
6 Months Ended
Jun. 30, 2019
Risks and Uncertainties [Abstract]  
16. CUSTOMER CONCENTRATION

During the six-month period ended June 30, 2019, the Company sold 84% of its products to its top five customers, respectively. As of June 30, 2019, amounts due from these customers were $5,663,578. During the six-month period ended June 30, 2018, the Company sold 89% of its products to its top five customers, respectively. As of June 30, 2018, amounts due from these customers were $4,650,250. This concentration makes the Company vulnerable to a near-term severe impact, should the relationships be terminated.