Consolidated Statements of Income and Comprehensive Income - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Income Statement [Abstract]
Sales	$ 468,049,906	$ 390,522,569
Include: sales to related parties	30,273,960	24,376,622
Cost of sales	345,534,015	286,336,367
Gross profit	122,515,891	104,186,202
Expenses:
Selling and distribution expenses	55,158,703	39,067,566
General and administrative expenses	26,939,370	22,023,338
Research and development expenses	16,366,393	11,004,560
Total operating expenses	98,464,466	72,095,464
Other operating income, net	10,122,416	3,039,824
Income from operations	34,173,841	35,130,562
Interest income	6,052,416	232,466
Government grants	4,307,609	2,264,055
Other income	260,448	101,475
Interest expenses	(13,570,956)	(3,100,396)
Other income (expenses)	43,219	(2,883,440)
Income before income taxes provision	31,266,577	31,744,722
Provision for income taxes	15,814,600	4,717,810
Net income	15,451,977	27,026,912
Net income attributable to noncontrolling interest in subsidiaries	2,716,278	2,702,691
Net income attributable to common stockholders	12,735,699	24,324,221
Comprehensive income:
Net income	15,451,977	27,026,912
Foreign currency translation adjustments	(10,274,872)	10,873,496
Comprehensive income	5,177,105	37,900,408
Comprehensive income attributable to noncontrolling interest in subsidiaries	1,688,791	3,790,041
Comprehensive income attributable to common stockholders	$ 3,488,314	$ 34,110,367
Weighted average common share - basic	19,304,921	19,304,921
Weighted average common share - diluted	19,304,921	19,304,921
EPS - basic	$ 0.66	$ 1.26
EPS - diluted	$ 0.66	$ 1.26