Small hexagon spark plugs are the prevailing igniting parts for petrol engine in advanced countries, which are the substitutes of the ordinary spark plugs used in our country now.
小六角火花塞是当前发达国家汽车发动机上普遍采用的点火元件，是我国目前普遍采用的火花塞的换代产品。
Small hexagon spark plugs are the prevailing igniting parts for petrol engine in advanced countries, which are the substitutes of the ordinary spark plugs used in our country now.
小六角火花塞是当前发达国家汽车发动机上普遍采用的点火元件，是我国目前普遍采用的火花塞的换代产品。
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