v3.8.0.1

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Accounting Policies [Abstract]
Spot HKD:USD exchange rate	0.129	0.129
Average HKD:USD exchange rate	0.129	0.129
Spot JPY:USD exchange rate	0.0089	0
Average JPY:USD exchange rate	0.0091	0

X

- Definition

Represent average exchange rate Hong Kong Dollar to United States Dollar.

+ References

No definition available.

+ Details

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X

- Definition

Represent average exchange rate Japanese Yen to United States Dollar.

+ References

No definition available.

+ Details

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Namespace Prefix:	retc_
Data Type:	xbrli:pureItemType
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X

- Definition

Represent spot exchange rate Hong Kong Dollar to United States Dollar.

+ References

No definition available.

+ Details

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Namespace Prefix:	retc_
Data Type:	xbrli:pureItemType
Balance Type:	na
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X

- Definition

Represent spot exchange rate Japanese Yen to United States Dollar.

+ References

No definition available.

+ Details

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Namespace Prefix:	retc_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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