spark plugs

1   Multi-ribs of insulator eliminates flash-over

2   Insulator made of heat alumina, strong resistant to heat shock, great mechanic and electric features and      super insulation

3   Nickel-plated housing prevents oxidation, corrosion, heat crimping process ensures absolute gas-tight fit

4   Inner sealing with conductive glass ensures fine conductivity and sealing . Multi-layer gaskets are elastically strong and reliable in sealing

5  Copper core electrode prevents oxidation and corrosion, good electric, heat conductivity and long spark plug   service life

6 Strong resistance to heat and shock
7Heat crimping process ensures absolute air-tight fit
8Inner sealing with conductive glass ensures a fine conductivity and seal
9Multi-layer gaskets are strong and reliable
10 Good electricity and heat conductivity
11 Prefect Starting Performance
12  Longevity Service
13  Exellent resistance to heat 
14  good heat conductivity

  Ningbo Demy (D&M) Bearings Co., Ltd. is a leading manufacturer of ball & roller bearings and exporter of belts, chains and auto parts in China. We specialize in research and development of various kinds of high precision, non-noise, long-life bearings, high quality chains, belts, auto parts and other machinery & transmission products.    

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Certificate of ISO/TS16949:2009