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Acquisition Intention Deposit (Details)	Dec. 31, 2018 USD ($)	Oct. 08, 2018 USD ($)	Oct. 08, 2018 CNY (¥)	Dec. 31, 2017 USD ($)
Acquisition Intention Deposit (Textual)
Acquisition advance payment | $	$ 2,181,000	$ 2,181,000
RMB [Member]
Acquisition Intention Deposit (Textual)
Acquisition advance payment | ¥			¥ 15,000,000

X

- Definition

Tha amount of acquisition deposit .

+ References

No definition available.

+ Details

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Namespace Prefix:	reto_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- References

No definition available.

+ Details

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Namespace Prefix:	reto_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	reto_TypeOfCurrencyAxis=reto_CNYMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: