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Concentrations and Credit Risk (Details 2) - USD ($)	3 Months Ended				6 Months Ended
	Jun. 30, 2020		Jun. 30, 2019		Jun. 30, 2020		Jun. 30, 2019
Supplier E [Member]
Net purchase						[1]	$ 996,484
Concentration risk, percentage of net purchase						[1]	17.26%
Shenzhen BAK [Member]
Net purchase					$ 3,841,680			[1]
Concentration risk, percentage of net purchase					64.96%			[1]
Supplier A [Member]
Net purchase	$ 326,949
Concentration risk, percentage of net purchase	12.03%			[1]
Supplier B [Member]
Net purchase	$ 402,026
Concentration risk, percentage of net purchase	14.79%			[1]
Supplier C [Member]
Net purchase	$ 278,794
Concentration risk, percentage of net purchase	10.25%			[1]
Supplier D [Member]
Net purchase			$ 294,786
Concentration risk, percentage of net purchase		[1]	23.52%
[1] Comprised less than 10% of net purchase for the respective period.

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- Definition

Amount of increase from purchase of net investment in sales-type and direct financing leases.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 11
-Subparagraph (h)
-URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919244-210447

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