Cboe Canada: ZEFI $1.14 0.00
| FRA: Y6B €0.60 0.01
| OTCMKTS:ZEFIF $0.90 0.08
Cboe Canada: ZEFI $1.14 0.00
| FRA: Y6B €0.60 0.01
| OTCMKTS:ZEFIF $0.90 0.08

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Methane Testing, Quantification, and Monitoring

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