Property, Plant and Equipment, Net (Details) - USD ($)	6 Months Ended
Sep. 30, 2019	Mar. 31, 2019
Less: accumulated depreciation	$ (838,201)	$ (745,429)
Property, plant and equipment, net	$ 1,759,907	1,158,898
Machinery [Member]
Useful life	10 years
Property, plant and equipment, gross	$ 632,683	658,043
Electric equipment [Member]
Property, plant and equipment, gross	$ 143,084	138,338
Electric equipment [Member] \| Minimum [Member]
Useful life	3 years
Electric equipment [Member] \| Maximum [Member]
Useful life	5 years
Office equipment [Member]
Useful life	5 years
Property, plant and equipment, gross	$ 74,097	78,917
Vehicles [Member]
Useful life	4 years
Property, plant and equipment, gross	$ 176,335	122,969
Leasehold improvement [Member]
Property, plant and equipment, gross	$ 1,571,909	$ 906,060
Leasehold improvement [Member] \| Minimum [Member]
Useful life	3 years
Leasehold improvement [Member] \| Maximum [Member]
Useful life	10 years

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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- Definition

Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

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