 CARSON CITY, NV, April 19, 2021 GLOBE NEWSWIRE -- via NewMediaWire -- Pharmagreen Biotech, Inc., OTC PINKS: PHBI, announces that the signed letter of intent with Advanced Bio-oil Technologies Ltd. ABOT, based in Denver, Colorado, as announced on February 16, 2021 has been extended by mutual agreement between the parties to June 30, 2021. 