The top ten famous brand spark plugs include NGK, Bosch, Denso, Torch, Champion, Wondfo, Hella, Deco, Sasaki and Kakamai. They are all leaders in the field of spark plugs and have excellent quality. and performance. NGK focuses on the R&D and production of spark plugs and related products. Bosch is the world's leading automotive technology supplier, Denso is a well-known spark plug manufacturer, and Torch has a number of patented technologies.