BOULDER, Colo.–(BUSINESS WIRE)–Prometheus Materials, a leader in sustainable building materials, announced today the achievement of remarkable results in the ASTM C423 sound-absorption testing of its ground-breaking bio-cement and bio-concrete technology. The company develops revolutionary zero-carbon building solutions that provide a superior alternative to carbon-intensive portland cement. The Johns Manville Technical Center in Littleton, Colorado – a world-class research and development fa
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