Cboe Canada: ZEFI $0.57 0.00
| FRA: Y6B €0.33 -0.06
| OTCMKTS:ZEFIF $0.41 0.03
Cboe Canada: ZEFI $0.57 0.00
| FRA: Y6B €0.33 -0.06
| OTCMKTS:ZEFIF $0.41 0.03

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Methane Testing, Quantification, and Monitoring

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