1902, Bosch was awarded the invention patent of high-voltage electromagnetic ignition spark plug. During the period of 100, Bosch * * * developed as many as 20,000 kinds of spark plugs with a total output of 7 billion. With a hundred years of rich experience and close cooperation with automobile manufacturers, Bosch has become the world's leading supplier of spark plugs in the original factory and after-sales market. Bosch spark plugs have been selected as standard equipment by all famous automobile manufacturers in the world. In China, Bosch spark plugs that meet global quality standards were selected as original parts by FAW-Volkswagen and Shanghai Volkswagen.