Niterra（5334）

News Release

Jan. 16, 2008
Affirmed AA-/Stable on senior debts of NGK Spark Plug
Dec. 07, 2007
Withdrawn preliminary AA- rating on shelf of NGK Spark Plug
Jul. 20, 2007
Assigned AA- to bonds of NGK Spark Plug
Jul. 18, 2007
Assigned preliminary AA- to shelf registration of NGK Spark Plug
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