Lines of credit (Tables)

12 Months Ended

Dec. 31, 2018

Line of Credit Facility [Abstract]

Schedule of Line of Credit Facilities [Table Text Block]

The Company entered into various credit contracts and revolving lines of credit, which were used for short-term loans and bank acceptance bills. The following tables summarize the unused lines of credit as of December 31, 2018 and 2017:

	December 31, 2018
Lender	Starting date	Maturity date	Maximum Amount Available of Line of Credit		Unused line of credit
			$		$
Bank of China (1)	10/30/2018	10/30/2021		12,777,080		389,445
Bank of China (1)	9/3/2018	9/3/2019		29,691,501		4,643,021
Industrial and Commercial Bank of China (1)	8/28/2018	8/28/2019		7,301,188		744,721
China Everbright Bank (2)	1/24/2018	1/23/2019		7,301,188		-
Industrial Bank CO., LTD. (1)	3/15/2018	3/15/2019		5,840,951		364,446
Guangdong Huaxing Bank (1)	9/13/2018	8/7/2019		23,363,804		10,829,780
Ping An Bank Co., Ltd (1)	5/15/2018	5/14/2019		10,221,664		6,851,536
Jiang Su Bank Co., Ltd. (1)	9/25/2018	9/24/2019		6,084,324		3,894
Total				102,581,700		23,826,843

	December 31, 2017
Lender	Starting date	Maturity date	Maximum Amount Available of Line of Credit		Unused line of credit
			$		$
Ping An Bank Co., Ltd. (1)	3/17/2017	3/16/2018		10,756,158		3,130,042
Industrial and Commercial Bank of China (1)	8/24/2017	8/31/2018		7,682,970		6,146,376
Jiang Su Bank Co., Ltd. (1)	4/20/2017	4/19/2018		3,841,485		113,708
Jiang Su Bank Co., Ltd. (2)	7/3/2017	7/2/2018		2,560,990		7,171
Industrial Bank Co., Ltd. (1)	9/20/2017	9/20/2018		3,073,188		517,832
Guangdong Huaxing Bank (1)	10/26/2017	9/27/2018		9,219,564		3,543,386
Hua Xia Bank Co., Ltd. (2)	10/23/2017	10/23/2018		7,682,970		4,745,002
China Minsheng Banking Corp., Ltd. (1)	11/14/2017	11/14/2018		5,121,980		1,280,495
Bank of China (1)	7/11/2016	7/11/2019		13,445,197		8,279,168
Bank of China (1)	7/12/2016	7/12/2019		12,292,752		3,366,677
Bank of China (1)	7/25/2016	7/25/2019		4,097,584		143,928
Total				79,774,838		31,273,785

(1)	The lines of credits are guaranteed by the Company’s Chief Executive Officer, Mr. Dang Yu Pan.
(2)	The lines of credits are guaranteed by the Company’s Chief Executive Officer, Mr. Dang Yu Pan, and his wife.