• • NGK Spark Plug Co.,Ltd.
  • NGK Spark Plugs (U.S.A.), Inc.
  • NTK Technologies, Inc.
  • NGK Spark Plugs Canada Limited
  • Ceramica e Velas de Ignicao NGK do Brasil Ltda.
  • NGK Spark Plugs SA (Pty) Ltd.
• • Bujias NGK de Mexico S.A. de C.V.
  • Woojin Industry Co.,Ltd.
  • NGK Spark Plugs (U.K.) Ltd.
  • NGK Spark Plug Europe GmbH
  • NGK Spark Plug (Australia) Pty.Ltd.
  • Taiwan NGK Spark Plug Co., Ltd.
• • P.T.NGK Busi Indonesia
  • NGK Spark Plugs (France) S.A.S.
  • NGK Spark Plugs Malaysia Berhad
  • NGK Spark Plug (Shanghai) Co.,Ltd.
  • NGK Spark Plugs (India) Pvt.Ltd.

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