Energy Transition: HPQ - Apollon Solar Extend Agreement Regarding the Development of the Technological Clusters Needed for a Green and Low Cost Transformation of PUREVAP™ Silicon Into Solar Grade Silicon MONTREAL, April 04, 2019 (GLOBE NEWSWIRE) -- HPQ Silicon Resources Inc. ("HPQ") (TSX VENTURE:HPQ) (FRANKFURT:UGE) (OTC PINK:URAGF) is pleased to announce that the anticipated results from the mid...