Page 7 of Hard Materials by Rado

high-tech ceramics 1,200 -1,900 vickers high-tech brushed ceramics 1,200 -1,900 vickers we make extreme demands of the materials we use hardness alone is not enough innovation durability brilliance and skin-friendliness are equally essential in the mid-1980s rado engineers discovered a substance that fulfilled all these requirements but had not been used in the watch industry before high-tech ceramics extremely resistant it had been applied in medicine formula-1 motor racing and on the heat shield that enabled the space shuttle s re-entry into the earth s atmosphere our pioneering application of this material led to the iconic rado ceramica watch.

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