Fredericton, Canada’s ADI Group Inc. and its subsidiaries ADI Systems Inc. and Geomembrane Technologies Inc. announced they have been selected as a platinum winner in the Canada’s 50 Best Managed Companies program. “To achieve platinum status, which involves being recognized as one of Canada’s 50 Best Managed Companies for six consecutive years, is a remarkable achievement,” said Hollis Cole, CEO of ADI Group, in a release.