28181090 (01/1997-12/2007) Artificial corundum, whether or not chemically defined (excl. white, pink or ruby, with an aluminium oxide content > 97,5% by weight `high purity`)
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28181090 (01/1997-12/2007) Artificial corundum, whether or not chemically defined (excl. white, pink or ruby, with an aluminium oxide content > 97,5% by weight `high purity`)
