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Summary of Significant Accounting Policies - Schedule of Finite Lived Intangible Assets (Details)	12 Months Ended
	Dec. 31, 2020
Intangible asset useful lives	50 years
Land Use Right [Member]
Intangible asset useful lives	50 years
Patents [Member]
Intangible asset useful lives	10 years

X

- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

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- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=WETH_LandUseRightMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_PatentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: