Environment preservation give us the technologival development guidance. Diamond Rio works hard on technology and process developing to evironment and men protection. Diamond Rio was the first to develop and present to brazilian market totally ecological diamond tools"s metal bonds Cobalt free, and naturally absorbed. Our diamond grits are manufctured controled under high technology and using latest equipments. One of the best characteristics is its low standard deviation on mechanical and chemical properties, which proves that our diamonds are completely under quality control.
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